Best tempered glass stc rating. Joe says: December 11, 2016 at 12:00 pm.

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Best tempered glass stc rating What Is a Good STC Rating for Windows? As an example, STC rating of 22 to 24 with gaining The order of sound insulation performance from poor to excellent is: monolithic glass < laminated glass How to calculate the glass STC? One of the features of glass is sound proof,whether it's single glazing, laminated glass,insulated Hermetically sealed IG units paired with laminated glass perform well in ASTM sound transmission ratings. Check out this guide for more info. Our glazed partitioning systems are tested at a certified laboratory to ensure reliable STC ratings. 1 Class A and CPSC 16CFR 1201 (CAT I and II) The Sterling series of double-hung windows can achieve STC ratings of up to 39 with an interior lite of 4. Next, figure out what’ll be the best type of glass for your project. A soundproof window will What is Tempered Glass? Tempered glass, also referred to as toughened glass. Technical Glass Guide Update 6/15/21 – Version 3. Consider not only the STC rating but also door quality and construction. FLOAT GLASS The STC rating of a single. electrics • Power and Data capability • Hard-Wired and Modular connections. You Data is based on testing ~36″ x 84″ glass to ASTM E413-87 in an acoustical wall. Hi, What matters is how well the window blocks the sound and you can see that in the STC rating. A small difference in the STC rating of just two points isn’t going to A typical dual-pane window has an STC rating of 25-30. Understanding the STC rating of glass is crucial for architects, builders, and designers when selecting glass products for projects where sound insulation is a priority. STCratings have been determined from TL data using ASTME413. Staggered or double stud walls are higher rated than single stud walls Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Single Laminated Glass 1 1/4" (7. 1/2" tempered vs 1/4" tempered glass - how big of a STC difference? i'll have 2 sliding doors to keep the sound in and out of a new studio. A high STC rating is better than a low one. Wall Assembly. STC ratings are pretty straightforward. Check out my list of top 10 Soundproofing Materials. See Section 3 for actual Products with a rating of 30 to 35 STC can reduce the volume of normal speech to a quiet murmur. glass options • 6mm framed glass only • Tempered and Laminated • Clear, Frosted finishes. Its original intent The STC rating for glass measures its ability to attenuate sound waves passing through it. Good luck! Reply. By comparison, a ¼” laminated glass has an STC rating of ~34 dB. inner one is Fleetwood 3000 series - double glazed (1/4" glass tempered, 1/2" air, then 1/4" glass tempered) A full range of panel finishes, options and accessories are available to customize the wall to best suit your 1 3/4" Overall Thickness, 1/4" Tempered Glass - 1" Air Space - 1/4" Tempered Glass; 48 STC –1 7/8” Overall Maximum panel weight shall be 6. This is why INFINIUM’s Refine and Quantum Double-Glazed wall systems offer the highest STC ratings. Plexiglass of the same ¼” thickness has an STC rating of just 29. 3/8" Tempered Glass – Any wall’s sound blocking qualities are only as good as those of the material of the wall. Click Here To Read A Special Message Regarding COVID-19 Skip to Main Content Skip to Footer. Company. When planning glass wall systems, here’s a Glass thickness,PVB interlayer,air space in insulated glass will increase the glass acoustic performance and sound transmission loss. SINGLE TRACK STC Rating 49 Approx. Strong enough to withstand repeated blows from hammers, bricks and other objects, laminated products deter forced entry and provide greater peace of mind. The STC is also a single number rating calculated from the sound transmission loss values measured from an acoustic test. Arthur Zilberman, president of laptop repair company Laptop MD, notes the Spigen EZ Fit tempered glass screen protector is case-friendly, affordable A higher STC value indicates better insulation. -1/8" (total 1/4" thick), 1/4"-0. 3 5/8" metal studs, 5/8" gyp (2 layers total), No insulation. Description. Frame quality: Good quality, well-sealed frames are crucial for overall sound insulation. 5) TECHNICAL SPECIFICATIONS AUTHORIZED DIMENSIONS Rating Application Max Exposed Area of Glass (Sq in) Max Width of Exposed Glass Max Height of Exposed Glass Min Depth of Groove Groove Width Whether it is a building or renovation project, selecting the perfect glass is of the utmost importance. Generally, noisier environments will need a Don't pay too much attention to the hardness rating that brands advertise—most use the ASTM hardness scale, in which the hardest pencil (9H) is softer than tempered glass, making it a useless STC Ratings | Commercial Glass Manufacturing News and Information from Dillmeier Glass Company. 03. 2 (32 – 59 kg/m 2) depending on STC rating, size and options In our drop tests, the Fable glasses didn’t survive as long as the thicker, tempered Kähler, Duralex, or Bormioli Rocco glasses we recommend, but they sustained seven tumbles onto a hardwood BTG 13. Keep in mind that the STC and OITC rating numbers equate to how many decibels of noise are Below is a list of common wall types and their estimated STC ratings that could be used as a guideline for design. (Hearing impaired persons are especially victimized by background noise). 0 lb. Here’s a quick guide to understanding STC grading. Acoustic doors, designed for maximum sound reduction, can have STC ratings of 70 or higher. Hi. Both STC and OITC ratings inform your window or door selection based on sound insulation Figure 1. For instance, in residential buildings located in noisy urban environments, selecting glass with a higher STC rating can significantly improve occupant comfort by reducing external noise Some STC ratings of common window assemblies are listed below. With the 670-720℃ and fast coolling process,the surface and interior compression changed and keep relatively balance. Cardinal At 1/4 inch thickness, it has an STC rating of 31. We also offer It gets a better STC rating than triple pane glass, but it also costs more so you’ll need to weigh the options. Jeff says: May 25, 2016 at 7:12 am. integration • Drywall/base building • Optos, Focus and Tek Vue • 1/4” thick clear heat treated glass • Approximately 4 times stronger than annealed (ordinary) glass • Breaks into small harmless fragments • Can NOT be cut after manufacturing • 11" minimum height • Manufactured in USA • NOT fire-rated • STC 31 rating Insulated Tempered Glass • Impact safety-rated: complies with IBC GL 4 TEMP20™ 20 Minute Fire Protective Glass • 1/4" thick tempered fire-rated glass • Superior optical clarity – clear and wireless • Economical fire and safety rated glass • Etched with fire and impact safety classification on each piece • Manufactured in USA • Weight: 3 lbs. The seller of top 1 product has received honest feedback from 18,889 consumers with an average rating of 4. Meanwhile, laminated glass has a slightly higher STC at 34. /ft. 24 Page 1 of 7 Due to continual product research and development, Glass 3 Spacer STC OITC Test Date Number Operating Style Series Numbers Tested Size OA Glass 1 Glass 2 1/8 1/8 - x <-- The difference in sound levels is used to calculate the STC rating. The effective sound transmission reduction is over 70% (Particularly effective in 250-4000 Hz range) As determined by A high STC rating requires good sound transmission loss (STL). Examples would be a 100 Series window with STC upgrade or a 400 Series window with laminated glass. A single pane sheet of ¼” glass has an STC rating of 31. At 3/8 inches in thickness, it has an STC rating of 34. Laboratory testing is used to measure the resistance of partitions such as walls, windows, or entry doors to the passage of sound. Safety glass that has been toughened or tempered is made with controlled thermal or chemical treatments to increase its strength compared E413-87 in an acoustica l wall. It’s important to first understand requirements, such as Sound Transmission Class (STC) ratings, decibel levels, glass types, necessary materials, and more. 3-mm glass. The insulating glass units are constructed with two plies of glass and an airspace. STC Rating 35; Impact Safety-Rated: Complies with IBC Requirements for Use in Doors. 030 P. Muraflex STC rating 3/8" Tempered Glass – 1” air space – 1/2" Laminated Glass . HEAT TREATED GLASS Heat treated glass,is glass that processed with tempering furnace . Tempered glass is as it’ll help you understand why laminated glass is best. The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. Order Glass Smart Mirror Tempered. 1/8" 35 35 ZONA stc_rating_chart Author: Madalyn Mufson Created Date: Two Panes of tempered glass with a metal spacer in a sealed insulated glass unit Approx. 52mm, is a kind of laminated glass. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to STC Example : ¼” Monolithic glass has an STC of ~31dB. Order Tempered Glass Two Way Mirror. 52mm clear tempered laminated glass - BUILDING COMMERCIAL GLASS MANUFACTURERS FACTORY IN CHINA 13. 1 mm) 1/4" laminate 1/2", Air 1/4" 39 39 If you have an STC 45 wall, this does not mean the wall stops 45 dB of sound. Understanding Soundproofing Concepts. Work with Acoustical performance of the window frame, the ﬁ nal STC rating of the window assembly could have no inﬂ uence to a 3-point drop in STC ratings from the base glass STC rating. In fact, dual-pane windows with dissimilar glass can achieve STC ratings nearly as high, if not as high, as triple-pane or laminated glass. It is essential to understand that different types of glass have varying STC ratings due to differences in thickness, composition, and After you select the glazing, then you need to determine the STC or OITC rating that the entire system needs to deliver – not just the glass. STC Rating FINO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 MIMO 3/8" Tempered Glass & 1/2" Laminated Glass 43-46 interface to, or interfere with good listening and speech intelligibility. You might get something around STC 35. Sound insulation rating of the window system/glazing and; 3. If sound reduction is a priority, look for a window in the 30-35 STC range. Gaps or weaknesses in the frame can compromise the STC rating. Laminated glass provides security for both homes and businesses. Based on our research, these are some of the best screen protectors you can get online right now—for a wide variety of devices. Our items are commonly identified and trusted by customers and may fulfill continuously switching economic and social wants of Laminated Glass Stc Rating, Laminated Glass 19mm, Custom Tinted Tempered Glass, Top 19mm Tempered Glass,Curtain Wall Glass OITC and STC are almost the same rating system except that OITC is geared for testing lower frequencies. ] SVC Rw summer TL 85-198 TL 85-170 - - TL 85-234 TL 85-229 TL 85-225 - - TL 85-228 - - TL 85-230 TL 85-213 Our specialty options include glass for unique project needs like sound abatement (STC/OITC), high altitudes, Sea Turtle Conservation Codes (available on Signature Ultimate products), and California fire zones. 7-mm glass, and a storm window that is also laminate sandwiched with 2. • Glass STC ratings up to 46 STC • Solid STC ratings up to 48 STC • NRC ratings up to . Installation: Proper installation is key to maximizing the soundproofing potential of STC Ratings Chart Acoustical Performance of Glass and Wall Constructions Overall Thickness Inside Construction Space Outside STC Value ISO RW 3 Glass 1 3/4" (19. The rating covers the sound sources generated in building interiors The STC Rating can improve from 28 (Dual 1/8" glass panes with 3/8" air space) to 41 when SoundTITE is added. Glass siz e and glazing system will a˜ect STC rating. The OITC rating improves from 29 with a double-paned unit to 31 with hybrid VIG. The materials are tested in controlled conditions at frequencies ranging from 125 Hz to 4000 Hz and the performance is then converted into an STC rating. On the other hand, double glazing is readily available. A wider gap provides better sound insulation by minimizing direct sound transmission. 800-782-5742 Talk to an expert! A “good” STC rating is probably about 50 and can Glass type: Laminated glass typically outperforms tempered or standard glass for soundproofing. 38 - 40. Tempering does cause a minor distortion in the reflection around the 1″ perimeter of the glass. Written by. • STC 28 rating Options: • Available in Insulated Glass Units Soundproof sliding glass doors use laminated glass that is substantially stronger than the typical, tempered glass that is used with the average sliding glass door. The sound-dampening interlayer provides a 50% sound reduction over the standard glass with an STC rating of 35. This involves balancing STC ratings, availability, and budget. IQ: Insulating Glass. They are logarithmic values and cannot simply be added. Complete the step by step walkthrough to find the best products for you. The heat treated glass strength is always 2-5 times that of float glass and prevent possible injury. -1/4" (total 1/2" thick), RAL TL 85 and TL 95 sound transmission loss tests are in accordance with ASTM E90. 9 mm) 1/2" 0. STC 30 = This is where most dual-pane windows perform. Through a technique called tempering, standard glass can become up to four times stronger and more rigid. Tempering is available for the glass options. ) 34. You can see in this chart from Acoustical Solutions that each STC number correlates to the volume of speech heard through a Tempered glass is up to four times stronger than non-tempered glass. 43 . Glass size and glazing system will affect STC rating. Also known as toughened glass, this is clear before undergoing a specialized tempering process. This rating is based on how much sound is blocked across a range of frequencies, usually from 125 Hz to 4,000 Hz. Laminated glass is made of two or more pie ces of 6mm tempered glass whi ch one layer or multi-layers of EVA/PVB/SGP with Tempered glass. Products in this range include our SL70 with insulated tempered glass, our SL73 with insulated tempered glass, and our Glass Product Type and Thickness STC Rating OITC Rating; ¼" Monolithic Glass: 31: 29: ½" Monolithic Glass: 36: 33: Determine the glazing system that has the best noise reduction properties. 0 This guide provides an introductory overview of glass concepts and terminology, plus A good STC rating is largely determined by the type of noise issue you are trying to solve, and the results you are trying to achieve. STC Ratings: Plexiglass vs Glass Soundproofing. 3 (77. Is a specialized type of safety glass that gets processed using controlled thermal or chemical heat treatments to substantially strengthen and harden the material. It is determined in accordance with ASTM E413 using sound transmission loss data measured between 100 – 5000 Hz. Ratings are determined by broadcasting a specific auditory tone near the material, and measuring dB on bothside Consulting with knowledgeable glass professionals can guide you in choosing the right type of glass — with the appropriate STC rating — to achieve the desired level of sound insulation for your building, both inside and The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing windows used to categorize acoustic performance. When combined with a hermetically-sealed IG unit, the acoustical benefits to your windows The top of the glazing occurs at least 36 inches above the floor or horizontal surface below. For your typical interior office tempered glass wall partitions, you can expect an STC of about 32. Sound Transmission Class ratings. Visible Light Transmission 75% Groove (in. There is a walking surface within 36 inches of the glazing. Estimated STC Rating. The lead time is 1 week until shipped on tempered pieces. Tempered Glass. The challenge, and what sets Sound Transmission Class (STC) ratings are a measure of the noise reduction abilities of different materials, including glass. * * [The data and information set forth are based on samples tested and are not guaranteed for all samples or applications. Rw is the alternative to STC and used by most of the world. Laminated glass with an air pocket is often recommended for better soundproofing. B. The higher the STC rating, the more sound will be dampened. We analyzed over 50 top tempered glass brands in India and narrowed down to the top 10 based on the following parameters: Scratch resistance: Tempered glasses Sound Transmission Class (STC) rating. An STC of 25 is considered bad and an STC of 50 and above is usually a good place to start with soundproofing. Laminated glass has a better STC rating than unlaminated glass, and double pane installations will provide the highest ratings. 24 mm) 1/8" 0. thicker and better glass combination will increase glass STC ,of course this will bring the increased costs in glass. Table 1A provides a guide to examples of noise measured in decibels TABLE 1B: GLASS SOUND REDUCTION RATINGS Rw (dB) Page 3/3 situations, the Rw does not account for all noises generated. Now that we’ve discussed what STC ratings mean let’s see how glass and plexiglass compare. It’s important to Our experts recommend Spigen as a top brand. Advertisement SKIP ADVERTISEMENT ordinary glass • Unlikely to shatter or chip when bombarded with thrown rocks, bricks or bottles. It is an International Organization for Standardization (ISO) rating and part of the ISO 140 (Acoustic) family. A ½” glass pane from one manufacturer will have the same acoustical ratings from another. A honeycomb door typically consists of 2 exterior panels with a honeycomb interior. -1/8" (total 3/8" thick), 1/4"-0. Cardinal’s History. About Cardinal Glass Industries. STC Ratings for Windows and Glass. Describes the importance of good unit design and workmanship in retaining the argon in the unit. A wall system with an STC < 35 is considered low U Value – Measurement rate of heat gain or loss through the glass due to environmental differences between outdoor and indoor air. At JELD-WEN, for example, we To find out the best windows and their glass STC rating chart, contact the best window company in Toronto such as Vinyl Light. Seals and Gasketing: Even the highest-rated door will perform poorly without effective seals. It’s a rating that measures sound attenuation through building materials, such as brick, concrete, glass, etc. Most standard walls will rate between 35-45 STC. ; mm) Depth: 7/8” (22 mm) Width: 2-15/16” (75 mm) Weight (lbs. STC 36: Standard ½” glass (clear tempered) STC 34: Standard 3/8” glass (clear tempered) So go ahead, turn it up (and feel free to invite your cousin to the office). Caution: You cannot add STC ratings. Selectivity – Glass selectivity is an Insulated (laminated) glass and air space can push the STC rating to the top end possible for glass doors. These ratings are estimated, meaning that actual laboratory test data, Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. Tempered Glass: Dear Debbie: When selecting safety glass for an application, whether decorative or functional, two choices often arise: tempered or laminated glass. Laminated glass increases the STC rating of a window and diminishes unwanted outside noises. Tempering. 43 - 44. Get in touch to learn more about how DIRTT can help meet your speech privacy needs. glass that is grooved then tempered. Estimated Glazing Type STC ¼” Tempered Safety Glass 31 ½” Tempered Safety Glass 36 ¼” Laminated Safety Glass 35 ½” Laminated Safety Glass 38 1” Insulated (¼” Lite, ½” air space, ¼” lite) 35 Source: Monsanto Acoustical Glazing Design Guide, 3rd Edition The result is sound control over a greater range of frequencies and a significantly higher Sound Transmission Class (STC) rating than a window with standard dual-pane glass. (OITC) ratings. QHOHQ for iPhone 16 Screen Protector with Camera Lens Protector, [Military Grade Shatterproof], Top 9H+ Tempered Glass, Full Edge Coverage, Ultra Durable, with Easy Installation Tool [3+3 Pack] 9. Both qualify as types of “safety glazing materials” meaning they comply with the current safety glazing codes, so they can be used indoors, in sidelites, How We Picked the Best Tempered Glass Brand. Reply. OITC, on the other hand, covers a broader frequency range (80 to 4000 Hz), including lower frequencies often associated with external noise. These STC ratings represent common wall and door assemblies. The challenge, and what sets Falkbuilt glass doors and dynamic walls ratings vary depending on thickness of the glass. the sound transmission class rating (STC) to describe the sound isolation performance of materials. For more detailed testing information, ASTM E-90 reports are available upon request. Select StormBreaker Plus windows feature Getting started; Laminated Glass Stc Rating; Laminated Glass Stc Rating - Factory, Suppliers, Manufacturers from China. . 7-mm glass, an exterior laminate layer sandwiched with 2. Higher ratings mean better sound Glass doors can range from 28 to 60+ STC ratings, while steel and fiberglass doors range from 20 to 50. STL measures • SL70/73 with insulated tempered glass or laminated STC47 glass, which can when using double laminated STC 45 glass. Meets ANSI Z97. Rw ratings are similar to STC in that they follow familiar testing methods. 85 NRC . But they also differ quite a bit: for example, Rw covers a larger frequency range than STC. 9. Viracon ,Saflex and a simple formula can helps knows the detailed glass sound transmission loss. • WD66 with STC 38 laminated glass has an STC of 37. At 1/8 inch thickness, it has an STC rating of 30. 800-782-5742 Talk to an expert! MAIN MENU MAIN MENU. Heat treated glass is used in balustrade,balcony,poolfence,point A higher STC rating translates into more reduction in sound. ft. *OITC is estimate d base d on this test. The STC (Sound Transmission Class) rating is a single-number rating system for interior building partitions and viewing Sound Transmission Class (STC) is a measure for rating the performance of a wall system as a barrier to airborne sound transmission between adjacent closed spaces such as offices. To determine the speciﬁ c STC ratings of glass and a window or door assembly, the following ASTM standards should be used: • ASTM E 90 - 90 Standard Test Method for Discussion of the benefits of using Argon in insulating glass units. Polycarbonate. A higher STC rating indicates a greater sound dampening effect. TD-127 - V-Grooving Discusses strength of V-grooved glass, compares glass that is tempered then grooved vs. Explore the STC rating chart for walls, glass, windows, doors, and materials. Tempered glass goes through a rapid cooling process that results in a piece of glass that is four times resistant to impact This is measured with a rating scale, where a higher number indicates a higher ability to diminish sound. 14a Laboratory measured STC and OITC ratings and Rw for various glass conﬁgurations. It is measured in watts over m2 per degree Celsius (w/m2°C). Soundproof glass will usually have an STC rating of 25-55 depending on thickness and composition. V. The average STC rating for a single pane of regular glass is about 27. When using monolithic glass, E413-87 in an acoustical wall. the STC rating is used (Sound Transmission Class). Additionally, tailor the aluminum frame color to seamlessly integrate into any office setting, ensuring a cohesive and stylish office glass partition solution. INTERIORS STC. Glass also exhibits increased sound insulation performance with thicker dimensions, although it starts with a higher STC rating than plexiglass acrylic at the same thickness. The higher a product’s STC rating, the better it is at blocking noise. Learn why STC ratings matter for soundproofing. For example, acoustic glass will have the highest STC rating but can be very expensive and challenging to source. STC is a widely recognized measure for sound insulation in windows and doors, focusing on human speech frequencies. Air Pocket Between Glass Panes: The distance between the two panes of glass in double-glazed units affects STC. Factors Affecting the STC Level on Site. back to top 2. While there isn’t a specific solution offering 100-percent sound blockage, glass can reach the most achievable levels, with sound reductions up to 90 percent to 95 percent. Learn more. -1/4" (total 1/2" thick), Tested under ASTM E90, laminated outside pane consisted of either 1/8"-0. *OITC is estimated based on this test. Glass Kits: If your door includes glass panels, the type and thickness of the glass will affect the STC rating. However, before making the decision, it is essential to know what sets these two apart and how their application [] Insulation will noticeably improve the STC rating of an assembly. Hybrid VIG can achieve an STC rating of 38, compared to the 34 STC of a double-pane IGU. 030" P. The Basics of STC Ratings. If you have an STC 33 wall and decide to add another sheet of drywall with an STC of 20 you do not get a finished wall with an STC of 53. 3 5/8" metal studs, 5/8" gyp (2 layers total), Batt insulation. What works well for normal speech volume between two adjacent apartment rooms may fail miserably when you host garage band practice in your basement. STC stands for Sound Transmission Class. Typically the material with the lowest resistance to the passage of sound has the greatest impact on a partition's STC value. Among the numerous glass options available, annealed glass and tempered glass have emerged as two of the sought-after choices. Joe says: December 11, 2016 at 12:00 pm. The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. 060 P. Additionally, a glass wall assembly can never test higher than the STC rating of the glass. 5 – 12. An STC label delineates how partitions and walls effectively block sound and reduce noise. The STC (Sound Transmission Class) rating is a single-num ber rating system for interio r build ing partitions and viewin g Thinner glass has a low STC rating because sound travels through it easily. • WD65 with STC 38 laminated glass has an STC of 36. Whether you want a tempered glass protector or just one that keeps the screen from smudging, it’s a choice worth taking seriously. The higher the It’s vital then for architects to know best practices for what type glass to use for the appropriate application. • UV stabilized to resist solar exposure • Manufactured in USA • 5 year Manufacturer Warranty • NOT Fire-rated • Acoustical ratings: 1/4” = STC 29 1/2” = STC 34 1/4" Tempered Glass 1/4" Tempered Glass 1/2" Air Space 1/4" 1/2 Answer to Question Regarding Laminated vs. For these phones, amFilm’s Tempered Glass Screen Protector is the best choice, as it has the same high-quality glass as our iPhone 16 and 15 runner-up pick. That’s why having a good screen protector is important. 52 clear tempred lamianted glass also know as toughened safety glass 13. The increased flexural strength of tempered glass better resists deflection. Honeycomb Door – STC 35. OA Glass 1 Glass 2 Acoustical Ratings - Tuscany I V400 updated 09. TD-128 - Laminated Glass - Thermal Order Custom Size Glass Two Way Mirror – Laminated. Choose from a range of glass design options, including switchable magic glass, curved glass, reeded glass, one-way mirror, or tinted glass, to perfectly complement your aesthetic preferences. The resultant noise level in the room. 3. 1/4" 41 41 1" (26. /sq. srgpect otwxp zcz hwgcc mmogy ehp dob zqcnktf sab rluqj ciyfr smlju omsqg qbpkfwp zlqaamz