Stc oitc ratings windows. manufacturer's published STC ratings.

Stc oitc ratings windows They specialize in high STC windows, perfect for keeping studio sessions crisp and clear. Standard single-pane windows typically have an STC rating of around 27, while double-pane Oct 14, 2014 · A basic window with conventional 1” insulating glass will rarely have an STC rating at or above 40 or an OITC rating at or above 32, according to the AAMA. Block Frame STC Rating. 24 Page 1 of 7 Due to continual product research and development, Sep 24, 2023 · For example, adding a window plug to your existing double-glazed window can improve its STC value by around 3 points. This means you can easily hear loud speech through the window. Lepage offers a variety of acoustic glass with high ratings. However, since its invention is relatively new, having been created in 1990, it’s still not used as widely as the STC, which was developed in 1961. STC and OITC cannot be directly compared. gov to view specific US climate zone requirements. If sound reduction is a priority, look for a window in the 30-35 STC range. Pim Foam or Dura**** OITC Test Date Test Number Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested 6040-Operating Style Series Numbers Glass 1 Glass 2 Spacer STC 3/32 3/32 - 28 23 5/17/99 TL99-191 3/32 1/8 1/8 3/32 3/32 1/4 1/4 3/32 1/8 1/8 - 29 Jun 20, 2023 · Understanding STC & OITC Ratings. Please visit www. Outdoor-Indoor Transmission Class (OITC) – applicable to exterior walls (including doors and windows) where the Our dual-pane design, combined with the thickness of the glass, allows our windows to achieve better STC ratings. When evaluating the soundproofing needs of a space, it’s essential to understand the distinction between Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC). •R2 This blog will discuss specific window ratings that are designed to measure their energy-efficiency performance. Nov 24, 2022 · Because OITC measures how well sound is blocked from the outside, it’s actually a superior rating system to STC when considering a window’s acoustical performance. To determine how much sound is transmitted through a window, manufacturers conduct testing to calculate ratings for two primary sound control systems – Sound Transmission Class (STC) and Outdoor/Indoor Transmission Class (OITC). In this study, the window had a target STC of 30 but was only testing to 25. The OITC rating represents transmission loss results from 80 to 4,000 Hz using a different mathematical equation than the STC rating. The first measure of acoustic performance is referred to as the Sound Transmission Class or STC. In general, OITC may be most appropriate if low frequency noises are an issue, like airplanes and heavy traffic. STC rating (frequency range - 125 to 4000 hertz) The STC rating (1961) provides a standardized way to compare products such as windows and doors made by competing manufacturers. Oct 14, 2014 · Sound ratings were developed by the American Architectural Manufacturers Association (AAMA) and the American Society for Testing and Materials (ASTM) to standardize the testing and rating of sound transmission for building components, particularly windows. A receiver on the The two rating systems used to measure the acoustical performance of windows and doors are OITC (Outdoor Indoor Transmission Class) and the STC (Sound Transmission Class). There is no dependable way to adjust these glass numbers to reliably predict whole window performance. As for recording studio windows, usual suspects like Soundproof Windows, Inc. Materials shrink and expand with cold/heat cycles and seals can begin to fail. STC Rating OITC Overall Glazing Rating Thickness Exterior ; Glass Thickness Interior Glass Thickness Sliding Window – Dual-Pane Standard Insulating Glass; 59. Jun 17, 2019 · Reduction in sound based on OITC ratings of Pella Lifestyle Series windows to a single-pane wood or vinyl window with an OITC of 19. Jan 18, 2022 · Style Line® Series | V250 Windows STC Ratings Updated : 01/18/2022 by K. STC OITC 80 100 125 160 200 250 315 Sep 20, 2020 · A pro’s guide to the importance of sound control and glazing strategies to control unwanted noise on a project. See full list on miwindows. Windows and doors can help block outside noises whether you live in the city or on a farm. Values shown are with standard reinforcement configurations. 2. If you refer back to the tables above, you’ll remember that the difference between a double-glazed window and a laminated version is 4 STC points. One is Sound Transmission Class (STC). Key window ratings include U-Factor, SHGC, and VT. 751 614 -426. U-Factor ratings of leading national wood window and patio door brands. 0 default parameters for a 2000 sq. The STC measurement has been around since 1961, so for a long time, that was the only rating to measure how windows performed acoustically, in 1990 the OITC measurement came about as a way to rate outside noise. 125 x 47. Outdoor/Indoor Transmission Class (OITC): To find OITC, sound is played at a predetermined frequency from 125 hertz to 4000 hertz. Air Space Secondary Window Glazing (Storm Window) STC Rating Range OITC Rating Range 1/8” annealed (DSB) + 1/8” annealed (DSB) 1/2” None 27-28 23-24 Type Glazing (nominal) STC OITC Type Glazing (nominal) STC OITC Type Glazing (nominal) STC OITC Type Glazing (nominal) STC OITC A: Based on our experience at the Architectural Testing Acoustical Laboratory, an OITC rating of 32 or STC rating of 40 is very difficult to achieve on a window with conventional 1" insulating glass. In short, a window plug can add almost the same improvement for a lot less money. Hope that helps you on your quest for peace and quiet in SoCal! The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. OITC, to rely on. Triple-pane windows have an STC rating between 28-34. Sound Transmission Class (STC) is defined in the ISO-140 standards series. Thermolite Sound Transmission Loss Test Report Results Buildings exposed to a noise level of 65 dB L eq-1-hr during any hour of operation shall have building, addition or alteration exterior wall and roof-ceiling assemblies exposed to the noise source meeting a composite STC rating of at least 45 (or OITC 35), with exterior windows of a minimum STC of 40 (or OITC 30). As we mentioned earlier, STC ratings for windows can range from 18 to 38: Single-pane windows usually have an STC rating between 26-28. Cloud Window has been perfecting the design and function of superior-performing acoustic windows for more than 25 years. Double-pane windows have an STC rating between 26-32. stc/oitc calculation methods manufacturer's published STC ratings. While there is no completely soundproof window, the higher the STC rating, the better a window is at sound reduction. So I would say the are the same or . Jun 20, 2024 · STC (Sound Transmission Class) and OITC (Outdoor-Indoor Transmission Class) are ratings used to measure the soundproofing effectiveness of building materials, particularly windows, doors, and walls. Sound Reduction Index (SRI) is defined in ISO-140 (2012). 175mm 3. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. May 22, 2022 · Commonly called acoustic laminated insulated glass, the windows provide an STC of 39 to 54 or greater. SOUNDPROOF WINDOWS®, Inc. Double-hung windows are not available with triple-pane glass. •Standard deviation of the difference was 2. This data is accurate as of October 2018. Unlike thermal The STC and OITC rating measures a window’s ability to block sound transmission. To get an STC rating for a window or door, the product will be tested for sound transmission loss on a series of frequencies between 125-4000 hertz. Both STC and OITC ratings inform your window or door selection based on sound insulation STC and OITC are standards that measure sound attenuation. Available on select windows. Refers to a window manufactured by Soundproof Windows, Inc. com 1−800−347−0438 The attached STC and OITC data is for glass only and that the final STC rating of the window assembly could vary because of the influence of the acoustical performance of the framing members and the construction of the window assembly. G. OITC (Outdoor-Indoor Transmission Class) measures outdoor-to-indoor sounds, like traffic, airplane noise, and construction. 060 40 33 INvent Fixed over Project-Out 2 60 x 48 1/4 1/2 5/16 39 33 32 INvent XLT Fixed next to Casement As the table shows, a single pane 1/4” annealed curtain wall window has a STC rating of only 31 and an OITC rating of 28. 501 re 306 396. The cost, however, may be prohibitive. To determine the specific STC ratings of glass and a Apr 8, 2024 · Sound Transmission Class (STC): The higher the STC number, the more efficient a window is at blocking outside noise. 250: 7/8" 3. Nov 16, 2024 · Sound Transmission Class (STC) Rating. Aug 14, 2024 · The OITC ratings of residential windows and doors range from the mid-20s to the mid-30s. Sound transmission class (STC) and Outdoor/Indoor Transmission Class (OITC) are measured in decibels (dB), and are the standard method for rating sound attenuation characteristics of glass products and window assemblies. An extra pane of glass can give a dual pane window a rating between 26 and 33. As you can see, no window manufacturer's published STC ratings. Sep 14, 2021 · Conduct These Three Sound Ratings. To identify your window Series, Identify My Andersen® Window and Patio Door Worksheet. Dec 31, 2024 · STC Ratings vs. They may have test data for their window systems which will typically be a table with sound transmission loss at various octave bands. Window energy efficiency calculated in a computer simulation using RESFEN 6. Wall Assembly Acoustical Testing Results. “Windows with a high STC rating typically have the same OITC rating as windows with a lesser STC rating, which can be a bit misleading. Acoustical Rating Systems. The final STC/OITC rating of the window assembly could vary because of the influence of the framing members and the construction of the window assembly. Ensuring your building meets the proper project and building code requirements for STC, OITC, and IIC sound ratings can ensure that your building's space offers an environment that will be comfortable for occupants and not generate complaints. 9375mm 32: 26 Hurricane Shield Series 2. Ask for our extensive test reports (over 40) using our window with 6 different primary window glass configurations. Two sound ratings are mainly used: sound transmission class (STC) and outdoor indoor “Windows might have an excellent STC rating, but without a high OITC rating, low-frequency sounds can be intrusive,’’ Merck said. "Sound Transmission Class (STC)" and "Outdoor/Indoor Transmission Class (OITC)" ratings are for individual units based on independent tests and represent entire unit. 73. May 21, 2024 · Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC) are commonly used to assess how well a window blocks sound. The Sound Transmission Class (STC) rating measures a window's ability to reduce airborne sound. To determine the specific STC ratings of glass and a Nov 4, 2016 · Photo courtesy Wausau Window and Wall Systems. A typical dual-pane window has an STC rating of 25-30. What Are Window Ratings? transmission, an OITC rating is designed to account for sound transmission from typical outdoor sounds which consists of frequencies lower than an STC rating. 1. The blares and beeps of heavy traffic, the roar of airplanes, and the rattle of trains all produce a low-frequency cacophony. Here’s what you need to know about how to find the right new home windows and why MI Windows and Doors is a great choice. 175mm: 29 23: Sliding Window – Dual Pane Impact Laminated Insulating Glass 59. Quaker Products Selection Guide for OITC/STC Tested Models QuakerCommercialWindows. Glass-only test results often are not based on rigidly supported lites, and will be several STC or OITC points higher than “whole window” results. STC (Sound Transmission Class) STC is a rating system that measures how well a building partition attenuates airborne sou For exterior to interior sound transmission, you want to look at STC but more importantly the OITC (Outdoor Indoor Transmission Class) You should ask for a product data sheet from the manufacturer. Aug 21, 2024 · STC indicates how well a window blocks noise. AAMA 1801-13, Voluntary Specification for the Acoustical Rating of Exterior Windows, Doors, Skylights and Glazed Wall Sections, describes the use of sound transmission loss test data to calculate Sound Transmission Class (STC) and Outdoor-Indoor Transmission Class (OITC PDF-1. To achieve these ratings and above, a dual window configuration with two sets of sash or a prime window with an exterior or interior storm panel Sep 22, 2020 · STC ratings allow you to compare the soundproofing abilities of windows fairly. The other is Outdoor/Indoor Transmission Class (OITC). E413-87 in an acoustica l wall. The STC and OITC ratings measure the ability of a building product to attenuate sound. For windows, STC ratings range from 18 to 38. The results express in decibels as opposed to the point system used to determine STC ratings and with weighting more towards low frequency performance. Most double-glazed windows will achieve an STC number in the mid- to high-20s. energystar. An STC 34 brings the windows up to the level of most of the outside envelope of the home. 4. [Click to enlarge any image] Definition of STC, Definition of SRI , Definition of OITC. STC increases faster than OITC as windows improve. Pella. Once seals fail, the energy efficiency the windows claimed when new is greatly reduced, regardless of how many panes of insulated glass you have. Insulation Type STC. Series: Forgent® Series Heritage Series Ultra Series VistaLuxe WD LINE Weighted Sound Reduction Index (Rw) and Exterior Wall Noise Rating (EWNR). F-FW-2. For a reference a lot of walls between condo’s and residential town-homes have an STC of 60. They are defined as single number ratings that are calculated using values of sound transmission loss (TL), providing an estimate of the performance of a product. Higher values indicate better noise reduction, which can be valuable in urban or noisy environments. Impervia ® Fixed Windows. The installers will use OSI foam to fill the gap around the windows as well, which should help. When looking at STC ratings for windows and doors be aware that the glass manufacturers publish values for the glass they produce. Explore noise reducing windows and doors from Pella. OITC is predominantly a measure of low-frequency attenuation, as low-frequency sounds are generally the more prevalent in typical urban environments. Outdoor Indoor Transmission Class (OITC) A rating of 40 would likewise correlate with a volume reduction to approximately 1/16th of the original level (1/2)^4 = 1/16). *OITC is estimated based on this test. The OITC method—the newer of the two but deemed the more useful—tests for higher-frequency loud noises and also those at the lower end of the spectrum, the quieter yet no-less-obnoxious ones often encountered in real life. Most single-pane windows have an STC rating of between 18 and 20, and most standard double-glazed windows have an STC rating of between 24 and 31. Thermal values are shown with no internal dividers (aka grids or muntins). (see Table 5-15). Due to ongoing product changes, updated test results or new industry standards or requirements, this data may cerhange ov time. Jan 28, 2025 · For more information on the STC and OITC rating of Andersen® products, please view the Performance Grade and Air Infiltrations for Andersen® Products. In commercial contexts, some window and door systems have OITC ratings into the 40s. 175mm: 7. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. After a 1/4” Thermolite sound control window was placed behind the same window, the STC rating improved to 43 and the OITC rating improved to 33. What is a good OITC rating for windows? So, OITC is the ideal measurement for Peerless acoustic windows & doors. 06 m W* n 0 792 612 They've got some serious sound-blocking game with STC ratings up to 60 and OITC at 49. STC ratings range from 0 to 100. There is no way to convert from OITC to STC (or vice versa), without access to the underlying TL data. The definitions of two ratings: Sound Transmission Class or STC and Outdoor-Indoor Transmission Class or OITC; The project’s design requirements and how they impact the glazing system, and; How to calculate an STC or OITC rating; STC versus OITC. Anything higher is impractical because, while sound might not enter via the windows, it will just as easily enter through the lower-performing exterior walls. 50003 659. Oct 18, 2023 · ASTM E1332 provides methods for calculating single-number OITC ratings, which evaluate low-frequency exterior airborne sound attenuation (such as car horns, sirens, construction, and low-flying airplanes) provided by exterior walls, windows, doors, or other facade elements. The final STC/OITC rating of the window assembly will typically be reduced from the base glass acoustical rating. 03. Our recording studio windows and doors have STC 60+ ratings. Calculated by using the sound transmission loss values in the 80 to 4000 Hz range as measured in accordance with ASTM E-90(09). Pella has a rating of 25 stc and Marvin has a rating of 27 stc. Window Series Operation Window Test Size I. STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. STC (Sound Transmission Class) STC is a rating system that measures how well a building material or assembly can reduce sound transmission. All Cascade Windows products may be ordered to meet or exceed Energy Star requirements. The STC rating scale indicates how much sound is inhibited, the higher the number the better the window does at blocking sound. The top-tier Tuscany® series is the clear winner; its impressive STC 39 and OITC 34 scores significantly dampen outside noise. E413-87 in an acoustical wall. Nov 24, 2022 · The STC measures interior noises, like conversations, the sound of a washing machine, etc. 0 window & curtain wall performance a1. Just because of the nature of the glass there will be some sound transmission. STC indicates how well an interior wall, exterior wall, door, window, or floor blocks noise. cycles. Based on comparing product quotes and published STC/OITC and . The STC ratings allow accurate 'apple to apple' comparisons. If you need testing for these three sound ratings, Intertek can help. An STC rating is an instrument measurement of how much noise is stopped. Most of our replacement windows have an STC rating of 34, which means they block most outside sound from entering your home. For both measures, the higher the number the better. Depending on the tightness and acoustical performance of the window frame, the final STC rating of the window 2110 2111 2130 2130J 2170; Glass 1 Glass 2; STC EWR; OITC single hung; 2210 2211 2230 2230J 2270 picture window Feb 20, 2024 · STC window rating values typically range from 25 to 75, and higher STC values indicate better sound insulation. The sound attenuation properties of a glazing type will be achieved with the plastic interlayer May 22, 2022 · A 1/4″ pane of glass with an STC of 31, has an OITC rating of 29, and a double 1/4″ pane window with 1/2″ of air between drops from an STC 0f 38 to an OITC of 34. 250 7/8" 3. com Because it weighs low- to mid-frequency sounds more heavily, OITC is a more appropriate rating System for Windows. OITC and Soundproofing Windows. When shopping for soundproof windows, there are a couple of factors to take into account when considering which rating, STC vs. OITC performance varies based on construction and glazing styles. Outdoor-Indoor Transmission Class (OITC): OITC is similar to STC but focuses on outdoor-to-indoor sound transmission, including traffic and other outdoor noises. could be your go-to. Oct 16, 2023 · acoustical ratings-->--> X 32 29 04/12/23 TL23-119 acoustical ratings not available for this glass combination glass combination X--> X 30 27 04/12/23--> X 34 29 12/14/22 OITC Test Date Test Number Intercept or Cardinal horizontal slider 6110 6111 6130 6130J 6170 size tested net 59" x 47" STC 29-34 X X <--32 Operating Style Series Numbers Glass STC and OITC results determined in accordance with ASTM E 90, Laboratory Measurement of Airborne Sound Transmission of Building Partitions, and ASTM E 1332, Determination of Outdoor-Indoor Transmission Class. Window Single-Hung & Gliding Windows 70 Series Single-Hung 1 of 2 Data is current as of October 2018 and is subject to change. Outdoor-Indoor Transmission Class (OITC) rates how well a barrier blocks sound, with an emphasis on low-frequency noises such as bass-heavy music or a plane flying overhead. Our options typically range between 24 Available nationwide. There are different ways to improve the STC rating of windows. Examples would be a 100 Series window Jan 11, 2025 · Additionally, if the structure is old and not well designed, sound-control windows may do little to nothing to improve the situation. OITC Ratings. From that experience, we produce products with Sound Transmission Class (STC) ratings as high as 60 and Outdoor Indoor Transmission Class (OTIC) ratings up to 49. STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Trinsic I V300 updated 04. foot new construction single-story home when Pella Lifestyle Series windows Performance documents for altitude limits, NFRC ratings, center of glass, joining window load table, air infiltration, and more. While increases may seem small, each increase Pella 2024 Architectural Design Manual Division 08 – Openings Windows and Doors www. Laminated windows have an STC rating as high as 40 or more. These Feb 6, 2014 · The American Architectural Manufacturers Association (AAMA) has published an updated standard for acoustical performance. Fiberglass Most Milgard series rate between 26 and 39 on STC tests. Acoustical Guide – Determining Minimum STC Rating Methods for Determining Required Window STC Rating The three methodologies discussed below for determining the minimum required STC of windows are identical in format. Single-pane windows: Existing single-pane windows often have an STC rating between 18 and 20. By using these window ratings, you can choose the right windows for your home, improve your home’s comfort, and save money on energy bills. 24 Page 1 of 2 Due to continual product research and development, details listed are subject to change at any time So if your goal is to reduce sound, be sure to ask your window replacement service for window STC or OITC ratings on the windows you are looking to purchase. Sep 21, 2018 · A “typical” dual glazed window generally has an STC rating between 26 – 33 depending on glass thickness and air space dimension. The same applies to soundproof windows with double laminated panes rated at an STC of 42; they drop to 33 on the OITC scale. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. I'm being quoted some ProVia vinyl windows that have an STC rating of 25 and an OITC rating of 22. STC ratings for sound-reducing windows begin at about 32. Dual-pane windows: New Jan 11, 2025 · Consider that an average exterior wall of a stick-built home has an STC rating between 34 and 38. I also have plain, uninsulated 2x4 walls with a stucco exterior - I'm not sure what an approximate STC rating is for those (but it's certainly higher Vertical and/or Horizontal imposts for multi-window appearance in a continuous master frame; Dual and triple low-e configurations for increased thermal ratings; Available with equal leg, 1 1/2″ integral frame flange for replacement or 1″ for new construction; Full range of tested and approved STC & OITC results for increased acoustic ratings That roughly translates to how many decibels the window inserts block, averaged from high-pitched to low-pitched sound. 24 Page 1 of 7 Due to continual product research and development, details listed are subject to change at any time Two common acoustical rating systems are: Sound Transmission Class Rating (STC) – applicable to interior building partitions and viewing windows where the sound source is human speech and/or office equipment. Ask your window professional to help select the right package for your home and your climate. Measured on a numerical scale, a higher number means less exterior noise inside your home. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g windows used to catego rize acoustic performanc e. Single-pane windows can have an STC rating around 25. OITC (Outdoor-Indoor Transmission Class) is a more modern and “real world” test that includes sounds on the lower end of the spectrum, from 80 to 4000 Hz. *OITC is estimate d base d on this test. Prime windows series range from STC 27 to STC 48 ratings after testing. This may suffice for low noise environments. Glass size and glazing system will affect STC rating. For example, an STC rating of 35 is not the same as an OITC rating of 35. STC •Average difference STC –OITC = 6. 17. Ratings are categorized by product Series. So you have learned all about OITC ratings and its predecessor STC rating but are still unsure about how to shop for soundproof windows? STC ratings are used for windows, doors, walls and most building materials. Our secondary window STC ratings range from STC 48 to STC 57. How to Increase Window STC Rating. picture window ( step ) ( match hv/sh ) 3315 picture window ( step ) ( match fc/fa ) 3310 6040 7/8" Glass 3 Spacer STC OITC Test Date Test Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 Acoustical Ratings - Ultra I C650 updated 04. 4 %âãÏÓ 9 0 obj > endobj 11 0 obj > endobj 23 0 obj > endobj 29 0 obj >stream /Figure >BDC q 1 i . While both ratings measure a material’s ability to block sound, they differ in the type of noise they assess and their applications. Usually, single-pane windows have an STC rating of 26 to 28 and double-pane windows have an STC rating of 26 to 32. 22. Remember, both OITC and STC rates equal the number May 30, 2024 · STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. Widely used STC (Sound Transmission Class) measures frequencies from 125 Hz to 4000 Hz. •Slope of the trend line is 0. OITC. STC OITC 80 100 125 160 200 250 315 Aug 8, 2022 · 4. Glass siz e and glazing system will a˜ect STC rating. Glazing I. 2 This classification requires data in one-third octave bands from 80 to 4000 Hz of sound transmission loss (TL) for outdoor-indoor transmission class (OITC), outdoor-indoor noise reduction (OINR(θ)) for outdoor-indoor noise isolation class (OINIC(θ)), or other data based on the rating definition for other ratings based on this classification. The STC ratings of soundproof windows touch at least 45, with some climbing as high as the mid-50s. When it comes to soundproofing, two key ratings need to be considered: STC (Sound Transmission Class) and OITC (Outdoor-Indoor Transmission Class). When purchasing windows to reduce the sound transmission look for those with a higher STC rating. OITC v. STC ratings are the ONLY way to accurately compare various noise reduction products. Each methodology -- aircraft, traffic and rail -- involves the four steps outlined in the flow chart in Figure 1. com. Replacing old single-pane units with new acoustic windows will likely have a noticeable effect. 0 single number ratings 4. Higher numbers show greater sound resistance. Implementation of the appropriate rating system is important because OITC and STC ratings are not linearly related, and the achievement of a strong STC rating does not necessarily correlate with a similar OITC rating. Below is a brief description of each rating system. Performance Grade, Air Infiltration and Sound Transmission Ratings — 400 Series Windows and Patio Doors Andersen® Product AAMA/WDMA/CSA 101/IS2/A440 Performance Grade (PG) +/-Corresponding Design Pressure (DP) Sound Transmission Class (STC) Outdoor/Indoor Transmission Class (OITC) Air Infiltration CFM/FT2 Casement Windows The higher the rating the higher the resistance to sound transmission. A window’s STC rating varies based on the thickness of glass, a gas fill between the Feb 22, 2024 · The OITC rating system is mostly consulted when there are low-frequency sounds involved between 80 to 100 decibels that can't be calculated by the STC rating. American Craftsman® Product Performance Sound Transmission Ratings Product Type Model IG Glass Type Sound Transmission Class (STC) Outdoor/Indoor Transmission Class (OITC) SS 25 21 DS 26 21 TS/DS (5mm/3mm) 32 27 Laminated 32 28 Oct 21, 2013 · Roughly speaking, the STC rating equals the reduction in decibel levels across the partition. For both STC and OITC ratings, the higher the number the better the sound performance. Similar to STC, the higher the OITC value, the better the wall assembly is at reducing sound transmission. Image MI Windows' Top-Selling Vinyl Sliding Glass Door Complements Open Floorplan STC OITC Projected Windows INventTM Product Family Double IGUs INvent Fixed over Project-Out 2 48 x 60 1/4 1/2 1/4 34 28 30 INvent Fixed 1 48 x 60 1/4 7/16 5/16 36 30 31 INvent XLT Fixed next to Casement 2 48 x 60 3/8 3/4 1/2 Lami 0. To put things into perspective, the Jan 29, 2025 · St. Thickness Ratings OITC | STC Made in America: All Quaker products are designed and manufactured in the United States at our state-of-the-art facilities in Freeburg, MO and Eldon, MO. Th ose ranges, along with the glazing to achieve them, are as follows: I. ucts, there are typical ranges of STC & OITC ratings based on the glazing make-up. zuoxa pxaaf qukrj krgfhag fupzy cgfmd iqelfin zqwd bpc rpjlojeb kdqx dvoljwhu efxl swt vxtd