Acoustic laminated glass. Types of Acoustic Glass 1.

Acoustic laminated glass 4. Varying thicknesses of glass and configurations (number of PVB interlayers) determine the level of safety or acoustic Feb 11, 2025 · The main purpose for laminated glass is to guard against high-wind environments where impact resistance is required. The careful and considered selection of glass can be crucial in helping to reduce noise level and meet noise requirements. Laminated glass consists of two or more layers of glass that are permanently bonded together with one or more polymer interlayers using heat and pressure. Acoustic laminated glass adds noise reduction to other benefits of laminated glass, helping to reduce noise levels so that people can be more comfortable in their living and work spaces. Automobile and skylights windshields typically use laminated glass. 8 mm interlayer. See in Sep 25, 2024 · What is Acoustic Glass? Acoustic glass is a laminated glass developed for effective sound insulation in environments having high noise levels. When laminated glass is used, it is only glass that has been coated with a resin or plastic. The difference in terms of the decay of the amplitudes between a standard PVB and an acoustic PVB is obvious (see figure 3). Expert Series: Glass Acoustic Performance - page 2 The table shows that the poorest-performing glazing is a single, monolithic lite. Acoustic glass windshields are an excellent choice for people who spend The performance data below applies to laminated glass units constructed with two plies of glass and an interlayer. While there may be more effective options (such as laminated glass), window inserts are a good compromise between performance and price. Is Plexiglass Sheet a Good Sound Barrier? This is a good question about this material and now I will try to answer that question. Excessive noise in urban areas can significantly disrupt our daily lives, both at home and at work. The NX used acoustic glass windshield, and double laminated front, my current 2023 RX is the same. ประเภทของกระจกกันเสียง (Acoustic Glass) มี 4 ประเภท ดังนี้. 5 times over normal glass. Jun 6, 2024 · Acoustic glass, also known as soundproof glass, is a type of laminated glass that incorporates a special interlayer to reduce sound transmission. Protection is provided by a transparent polyvinyl butyral (PVB) interlayer, a plastic material placed between two or more sheets of glass. Acoustic glass is used in a wide range of applications to create quieter and more comfortable spaces: 1. See in What Is Acoustic Laminated Glass? Acoustic laminated glass is windshield glass, which consists of two glass panels with a membrane layer between them. Acoustic laminated glass works by increasing the thickness of the glass pane, including the usage of laminated glass either on its own or within an Insulating Glass Unit. Keywords 1= Acoustic, 2= laminate, 3= Sound Control, 4=Safety Glass, 5=Structural Glazing Description. 5. This type of windshield glass is more expensive than standard windshields, but it’s not uncommon to find it on new vehicles. 4mm Laminated Safety Glass 32 dB 31 dB 29 dB 6. The difference is what you can't hear The answer to a noise concern is not less glass, but the use of innovative laminated safety glass made with Saflex® Acoustic PVB interlayer. Laminated Acoustic Glass. Its properties include an improved safety aspect, structural advancement, and sound deadening. Mar 29, 2022 · Acoustic laminated glass has revolutionised the manufacturing of glass. If you’re looking for ways to keep inside-noise inside and outside-noise outside, acoustic glass is the way to go. Hushes sound by up to 39db, bringing perceived volume down to a whisper. Acoustic glass is a laminated glass, with special interlayers to provide a better acoustic insulation performance. Laminated Safety Glass is manufactured by permanently bonding two or more lites of glass with layers of PVB interlayer, under heat and pressure, to create a single construction. Glass thickness for laminated glass excludes interlayer thickness. 8mm Acoustic Laminate Glass. 12. Types of Acoustic Glass 1. Insulating acoustic laminated glass Harness the Power of Acoustics and Efficiency with Soundshield-EcoTech™ Step into a world of serenity with Soundshield-EcoTech™ – an innovative solution to reclaim tranquility in the midst of urban uproar. What is Acoustic Glass Windows? Acoustic glass is a specially designed glass made of two or more glass sheets bonded together using acoustic interlayers. 6. In the event of breaking, it is held in place by an interlayer How is acoustic glass made and how does it work? Laminated glass consists of two or more layers of glass that are permanently bonded together with one or more polymer interlayers using heat and pressure. the leading sound attenuated glass solution. Discover our products specifically designed to reduce noise levels transmitted through glazing. gpd. In short, soundproof window inserts are a viable option if you don’t want to spend lots of money insulating your window. Can acoustic glass be retrofitted into existing windows? Yes, acoustic glass can be retrofitted into existing windows. The acoustic performance of glazing is expressed using the weighted sound reduction index Rw, expressed in decibel (dB). Soundlab AI is one of the Solution Finder tools used by Whisper™ Acoustic Insulation reduces noise by using a unique acoustic PVB (Polyvinyl Butyral) interlayer, which incorporates a dampening core between the two panes of glass. Mike Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. 1. Glass Options. Acoustic Laminated Glass is the ideal way to get the next degree of peace since it assists in reducing noise in your house or office. As with triple-pane glass, laminated glass reduces the airspace and doesn’t tend to perform much better than a dual-pane window with dissimilar glass. May 31, 2018 · The New All-Electric Jaguar I-PACE features acoustic laminated glass to silence exterior noise, further enhancing the sense of refinement inside. The acoustic performance of glazing is expressed using two the weighted sound reduction index Rw expressed in decibel (dB). This can be to toughen the glass, so that it won’t smash when hit, or to improve its acoustic properties. com. Whatever your needs, Prentice Glass has the expertise and products to deliver the best solution. 4° Angled Glass For Max Acoustical Performance – Optional Flat Glass Configuration; Window Specifications: One Insulated Glass Unit With 2 Pieces Of 1/4″ Laminated Glass Plus An Air Cavity And An Additional Pane Of 3/8″ Laminated Glass; 6-3/8″ Aluminum Frame; Acoustically Treated Frames & Seals Aug 7, 2023 · The best soundproofing performance is obtained with the installation of acoustic laminated glass. e. Oct 3, 2024 · Because regular glass has more soundproofing capability than plexiglass. Guardian LamiGlass® Acoustic is a laminated glass with an advanced interlayer that delivers significantly improved sound insulation compared to standard laminated glass. Laminated glass consists of two or more glass panes bonded together with an interlayer made from polyvinyl butyral (PVB) or another acoustic material. The +2 laminated safety glass enables A&D professionals to provide an alternative to the “fish bowl” effect – clear glass office fronts and conference rooms that make employees feel on display – by allowing architects to: create peaceful, quiet Laminated Safety Glass is manufactured by permanently bonding two or more lites of glass with layers of PVB interlayer, under heat and pressure, to create a single construction. How is acoustic glass made and how does it work? Laminated glass consists of two or more layers of glass that are permanently bonded together with one or more polymer interlayers using heat and pressure. Laminated glass increases the sound insulation by decoupling the glass panes and damping the vibrations generated by the sound waves. Sep 16, 2012 · Cameron Hook from Viridian talks about their ComfortHush Acoustic Laminated Glass at designBUILD 2012. I believe, and I may be completely wrong, the UX and NX250 do not. Single Glass Rw Rw+C Rw+Ctr 6. Data is based on testing ~36" x 84" glass to ASTM E413-87 in an acoustical wall. Is Laminated Glass Better For Soundproofing? Laminated glass is typically used in automotive windshields and is created by laminating two or more pieces of glass together Laminated glass looks identical to normal glass while providing protection from injuries, falls, break-ins, vandalism and noise. 3 Toughened (Tempered) Laminated Glass: 3. 8 Coated Laminated Glass: 3. AGC Stratophone. Laminated Glass Laminated glass is a common type of acoustic glass. May 22, 2022 · What is Acoustic Laminated Glass? Acoustic laminated glass offers improved levels of noise reduction over regular laminated glass. 28mm The thickest possible single glazed acoustic glass that we can use 41 40. Mar 4, 2025 · 3. High-performance laminated glass can achieve STC ratings that significantly exceed those of monolithic or tempered glass, often reducing noise levels by up to 50%. The highest noise insulation is achieved using an acoustic laminated glass. Acoustic Annealed Laminated Laminated safety glass produced with a TROSIFOL Sound Control interlayer can be supplied in toughened or annealed form and has all the outstanding security properties of standard laminated glass, as well as high sound insulation values, up to 2 dB better than float glass of the same thickness. The interlayer is often made of materials like polyvinyl butyral (PVB) or ethylene-vinyl acetate (EVA). Oct 9, 2024 · 4. Single glazed acoustic – LamiGlass 18. In the event of breaking, it is held in place by an interlayer All acoustic glass is laminated, but not all laminated glass is acoustic. Aug 31, 2023 · Acoustic laminated glass on 2022 Hybrid Blue trim Does it have that? www. This is due to the laminated structure of acoustic glass. Contact us . ie Carlen Glass Merchants Ltd Feltrim Road, Swords, Co. Hermetically sealed IG units paired with laminated glass perform May 29, 2024 · What is Acoustic Windshield Glass? Acoustic windshield glass is a type of laminated automotive safety glass that reduces the noise levels in a car. It is composed of two or more layers of glass that are bonded together with one or more layers of PVB or other acoustic interlayer materials. The desired acoustic performance can be achieved through combining various thicknesses of glass with a special PVB (polyvinylbutyral) interlayer. 4 Acoustic Laminated Glass: 3. The performance data below applies to an insulating unit constructed with two plies of glass and an air or argon filled space. 38mm standard laminate, offering thinner glass options with superior acoustic performance. *OITC is estimated based on this test. Achieve sound control similar to lamination with a single glazed solution, bringing perceived volume down to a whisper Sound Control: Effectively reduces perceived loudness by […] Acoustic laminated windshields reduce noise in the mid to upper-frequency range, between 1500 Hz and 5000 Hz, by as much as 60%, and glass weight by up to 15%. . You can find out more about other glass types by reading our blog article on Designed to provide superior acoustic insulation and noise control, Acoustic Lami Glass plays a crucial role in creating a soothing and peaceful environment in both living and working spaces. 20 Moore Street Leichhardt, NSW 2040. This form of glass gives an improvement of 3db – 5db depending on the thickness of the PVB layer, when compared to ordinary toughened glass of the same thickness. 6 Bulletproof Laminated Glass: 3. fi “Acoustic Interlayers for Laminated Glass – What makes them different and how to estimate performance” Julia Schimmelpenningh Global Applications Manager – Architectural Advanced Interlayers - Solutia Inc. Jun 6, 2024 · Acoustic glass, also known as soundproof glass, is a type of laminated glass that incorporates a special interlayer to reduce sound transmission. Cardinal's laminated glass offers sound dampening, reducing audio decibel levels in high-noise areas. The Configurator is somewhat buggy. 8mm Acoustic Laminated 37 dB 36 dB 33 dB 10. Normally it can block the transmission of a few sounds but it doesn’t act well like other acoustic (laminated) glass and acoustic materials. This patented, tri-layer system targets sounds in the 1000–4000 Hz range (an area sensitive in human hearing) for superior sound damping in laminated safety glass. Feb 12, 2025 · The acoustic performance of laminated glass can be measured using metrics such as the Sound Transmission Class (STC). Laminated glass provides higher mechanical resistance and security benefits. It thus provides enhanced urban glass sound comfort in both residential and commercial buildings. 76mm/12mm/4mm float glass Double glazed units with acoustic glass on the exterior pane 40 30. Acoustic glass is known to provide a high level of sound insulation. Provide more privacy and a quieter environment with SDAC, bumping up the STC rating on a budget. How it works. Each pane of glass of an acoustic glass window is laminated with a layer of PVB (Poly Vinyl Butyral). Learn more a Laminated glass is also extremely flexible – it will flex before shattering into pieces. Ideal for doors, windows, and interior partitions, this glass ensures superior sound control, creating a peaceful and serene environment. See in Power sliding glass moonroof; Acoustic laminated glass; Body-color outside mirrors; Dual Zone Automatic Temperature Control; Rear passenger air conditioning vents; Remote Engine Start System with Intelligent Climate Control [19] 4-way power adjustable front-passenger’s seat; Leather-appointed seats; Heated front seats; Heated steering wheel Aug 17, 2023 · SDG acoustic laminated glass is the perfect solution. The highly sound insulating PVB inter-layers are laminated between glass panels using normal interlayer lamination methods of heat and pressure creating a glass unit with a lower overall Rw value measured in Db Jun 6, 2024 · Acoustic glass, also known as soundproof glass, is a type of laminated glass that incorporates a special interlayer to reduce sound transmission. In addition to acoustic performance, Guardian LamiGlass® Acoustic offers all the benefits of standard laminated glass, including safety, security and UV protection. The downside of a Laminated Acoustic Windshield. Plus, the membrane between the layers of glass helps minimize vibrations from sound. It consists of at least two glass sheets bonded together with one or more Polyvinyl Butyral (PVB) including special acoustic PVB interlayer (PVB Silence), providing thus excellent insulation against noise. Acoustic laminated glass is made up of two or more sheets of glass joined by elastic interlayers, with a sound-absorbing layer inserted between the standard interlayers. Acoustic glass is made by laminating two pieces of glass together with a sound-blocking Polyvinyl butyral (PVB) inner membrane. 30pm Sat and Sun: Closed Phone: 9660 7722 Fax: 9660 7733 Email: sales@gerrysglass. They offer distinct advantages over double-glazed windows, which have the same features. Applications of Acoustic Glass in Urban Environments. Saint Gobain Stadip Silence. PVB Interlayer Material : Acoustic laminated glass uses specially designed acoustic PVB interlayers, which have higher density and more complex structures to improve sound Stratophone laminated glass enables almost all AGC glass products to be combined with special acoustic PVB interlayers. This acoustic interlayer isn't visible to the eye and provides a perfect solution for glass floors, architectural windows and commercial curtain walling. In case of breakage, the interlayer holds the shards together, reducing the risk of injury. What is the typical lifespan of acoustic glass? Jan 18, 2024 · The 2025 Yukon Configurator lists Acoustic laminated glass in the build summary for the Denali Ultimate but not the straight up Denali. 08kg/m2 Other types of acoustic glass are available and can achieve Rw values up to 58 How is acoustic glass made and how does it work? Laminated glass consists of two or more layers of glass that are permanently bonded together with one or more polymer interlayers using heat and pressure. Description. Do all trim levels have it and am also wondering about the Tahoes. Some brands of enhanced acoustical laminated products are: Pilkington Optiphon. The difference is what you can't hear The glass delivers a Sound Reduction Factor (Rw) of up to 54 decibels (dB) in triple glazing and 52dB in double glazing. Applications in Secondary Glazing Toughened glass provides strength and safety, laminated glass offers security and soundproofing, and specialised options like fire-resistant and acoustic glass have unique benefits. How durable is acoustic glass? Acoustic glass is highly durable and it is resistant to shattering. Dublin, Ireland. Oct 27, 2024 · Laminated glass is a type of safety glass that holds together when shattered. The result is a sound reduction index (Rw) of up to 40 dB for 12 mm glass. This means that all acoustic glass is laminated, but not all laminated glass is acoustic, if the PVB interlayer is not The answer to a noise concern is not less glass, but the use of innovative laminated safety glass made with Saflex™ Acoustic PVB interlayer. This type of glass is no stronger than ordinary glass but it will remain intact on impact as a result of the bonded interlayer which prevents the glass from breaking into large pieces. The glass delivers a Sound Reduction Factor (Rw) of up to 54 decibels (dB) in triple glazing and 52dB in double glazing. The thickness shown at the right column is the total one. The +2 Collection is named for its ability to provide combined acoustic and visual privacy. This core acts to prevent vibration and eliminate the coincidence dip - a phenomenon that occurs with single panels of glass vibrating at the same frequency thus Acoustic laminated glass adds noise reduction to other benefits of laminated glass, helping to reduce noise levels so that people can be more comfortable in their living and work spaces. That’s a reduction of around 6dB in the high-frequency range and 2dB to 3dB in the low to mid-range. In some cases, however, laminated glass can offer a slight (around one point Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. Oct 31, 2022 · The acoustic glass is laminated, but the acoustic glass is not always laminated. It attenuates external noises from traffic and urban areas, as well as rain and hail on windows by up to 50 dB . The desire for more natural light in buildings is driving a trend towards larger energy-efficient windows, and national and municipal level regulations require the use of safety glass in an increasing number of architectural applications, for which laminated glass is one of the most effective solutions. au There are two main types: acoustic laminated glass and acoustic insulating glass. Acoustic laminated glass, also known as noise control glass, is a great option to help reduce the levels of noise that penetrate a building. Reduces UV radiation by 99% reducing fading up to 8. Keep the outside out of living and work spaces with our soundproofing options. 1 . PressGlass Acoustic Galzed Units. Acoustic laminated glass is different to laminated glass. One of the major downsides of having an acoustic windshield is the overall cost. Two layers of premium (+355) 69 209 6620 Dec 11, 2012 · Sound reduction index values for several laminated glass units with acoustic interlayers. 13 mm means 6 mm + 6 mm + 0. For Monolithic Glass Increase glass thickness For Laminated Glass Increase glass thickness Use different glass thickness for individual glass lites, i. Glass controls Jan 26, 2025 · Like other laminated glass types, acoustic glass is highly durable and resistant to impact. 5mm VLam™ Hush achieves the same acoustics compared to 10. กระจกชั้นเดียว (Single Glazing) กระจกประเภทนี้ยิ่งมีความหนามาก ยิ่งป้องกันเสียงได้ดี ส่วนใหญ่ใช้เป็น Sep 10, 2023 · While options like acoustic curtains exist, they obviously block light and visibility. This glass is produced by applying heat and pressure to glass plates and a sound-absorbing PVB (Polyvinyl Butyral) interlayer. Furthermore laminated glass is able to be used in an extensive range of applications that allows it to be utilised in a variety of spaces. hyundai-forums. Figure 3: Decay of free vibration observed on laminated glass bars of 10 x 30 cm with 2. This ¼ inch thick glass increases the ability to block annoying sounds from outdoors. 24kg/m2 Double glazed acoustic – Lamiglass 8. Şişecam Flat Glass Acoustic Laminate Glass. Its structure and composition play a vital role in its acoustic properties. C takes into account medium and high frequency noise sources such as TV, music, loud conversations or aircraft noise a short distance away. +353 (01) 845 2526 Email: sales@carlenglass. 8mm Laminated Safety Glass 34 dB 33 dB 31 dB 6. 8mm acoustic laminate glass is a specialized type of laminated glass designed to provide superior sound insulation properties. Data for laminated glass is based on pvb interlayers (excluding acoustic pvb interlayers). Acoustic Lami Glass is a revolution in sound control, consisting of multiple layers of glass bonded together by acoustic polyvinyl butyral (PVB) interlayers. STADIP SILENCE® is a laminated safety glass with acoustic performance. performance of glass products. For most applications, laminated glass represents an effective, low-cost method of reducing noise: Clear, Grey, Green, Bronze, Blue & Cool experiment: A laminated bar carrying a small accelerometer is excited with a short strike to freely vibrate on two foam supports. The glass is composed of two or more layers of glass bonded together with a plastic interlayer, typically polyvinyl butyral (PVB) or ethylene-vinyl acetate (EVA). Laminated glass is simply glass that has been coated in something like a resin or plastic. 8mm Laminated Safety Glass 33 dB 31 dB 29 dB 10. The difference is not just technical, it’s something you can hear and feel in your daily life. The combination of thicker glass and laminated lites containing acoustic grade polyvinyl butyral (PVB) These acoustic interlayers or resins dissipate sound waves much more than two or three PVB interlayers as in a typical laminated glass. Acoustic interlayers can be found in vehicles, where laminated windshields are standard features and laminated side windows, also called sidelites It’s the same on most models with the exception of the L-series. Laminated Glass – this safety and security glass is typically made up of one or more panes of glass with bonded interlayers of PVB (polyvinyl butyral). Data can be adopted for air or argon gas-filled cavities Discover our Acoustic Laminated Glass, designed to provide superior sound insulation and acoustic performance for a variety of settings, ensuring a quieter and more comfortable environment. Acoustic inter-layers are laminated between toughening pieces of glass to produce a glazing unit with much improved acoustic performance. Kuraray’s Soundlab is an artificial intelligence program that calculates the acoustic properties of different types of laminated glazing. 8mm Acoustic Laminated 38 dB 37 dB 36 dB 12. K67 EV78 Open in Google Maps STADIP SILENCE® is a laminated safety glass that provides a high level of sound insulation thanks to an acoustic PVB film placed between the glass panes to limit noise penetration. 8mm Acoustic Laminated 35 dB 34 dB 32 dB 8. Pilkington Insulight™ Phon units provide enhanced sound insulation. 9 Heat Strengthened Laminated Glass: 4 Types of Laminated Glass Based on Interlayer Materials. Acoustic glass The downloadable R4P brochure says there is acoustic glass in the front driver and passenger doors though I've seen mention elsewhere of it being used in the windshield and other locations. Can’t speak about the IS. Acoustic glass is typically made by combining multiple layers of glass with an interlayer material that has sound-damping properties. Surprisingly, the right glass in your windows and doors – namely ESG Acoustic – can help to solve this modern-day urban problem. Acoustic interlayers refer to the use of a special polyvinyl butyral (PVB) – a resin-based plastic – as the plastic in laminated glass, which provides sound-reducing qualities in the glass. This innovative approach utilizes a thin, transparent PVB (polyvinyl butyral) interlayer sandwiched between two layers of standard automotive glass. To achieve this, several methods are employed. With our Acoustic range, buildings preserve peace and quiet inside, no matter what’s happening outside. 5 Annealed Laminated Glass: 3. Acoustic glass reduces noise transmission far more effectively than laminated glass. 2 GLASS PERFORMANCE DAYS 2012 www. Pilkington Insulight™ Phon. 1 PVB (Polyvinyl Butyral): 4. 8mm Acoustic Laminated 39 dB 39 dB 37 dB Mar 21, 2024 · An acoustic glass windshield, or a sonic laminated windshield, is a specially designed windshield that incorporates an additional layer to reduce noise transmission into the vehicle’s cabin. Laminated glass reduces noise transmission due to the sound damping characteristics of the interlayer. It typically consists of two layers of 6mm glass bonded together with a specially engineered acoustic interlayer, which is often made of a combination of PVB (polyvinyl butyral) and SGP (SentryGlas® Plus). The good news, however, the difference in price between an acoustic windshield and a regular windshield will most likely go down as the demand and volume of acoustic glass increases. Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. Experience tranquillity with our premium 6. Designed for urban living, the glass reduces noise by Dec 10, 2024 · Acoustic Performance: Acoustic laminated glass offers superior noise reduction compared to regular laminated glass, especially in the suppression of high-frequency sounds. 2 EVA (Ethylene Pilkington Optiphon™ is a high quality acoustic laminated glass that offers excellent noise reduction without compromising on light transmittance or impact performance. James' range of laminated glass products: Laminated glass comprises a resin-based interlayer which effectively 'dampens' the transfer of sound waves. Acoustic Properties Tones / Types Available; OptiLam: G. This glass is not only functional but also looks like any other standard glass, making it a seamless addition to any building. 7 Burglary-Resistant Laminated Glass: 3. Laminated glass is known for its ability to be multi-functional. com 2022 Santa Fe Hybrid Limited Portofino Gray / Black. One of the more pressing challenges of modern construction is the problem of unwanted noise. Acoustic laminated glass consists of two or more sheets of glass bonded together, or by one or more acoustic Polyvinyl Butyral interlayers, knows as PVB. Mon - Fri: 7:30am to 4. The interlayer helps absorb sound vibrations, enhancing the glass’s sound-dampening properties. Mar 12, 2023 · Acoustic laminated glass, also known as sound-reducing or soundproof laminated glass, is a special type of laminated glass that is designed to reduce noise transmission. , ¼” glass + interlayer + 3/ 8” glass For Insulating Glass Units Increase glass thickness Increase air space dimension Mar 5, 2020 · An acoustic glass panel has virtually the same appearance and transparency as ordinary glass. Click and check how we combat urban noise, and create a peaceful environment. However, acoustic glass is different in that it comprises of two or more sheets of glass bonded or laminated together (visible only when viewed from the edge of the panel). The OITC/STC ratings improve with the addition of more lites, sealed airspaces, and laminated lites. Instead of a solid PVB interlayer, acoustic glass contains a special resin (PVB) between the two laminated layers of glass. Save Jan 20, 2025 · What is Glass Acoustic Comfort? Laminated glass is effective in minimizing sounds like honking horns, loudspeakers, clattering rain, construction equipment, and so on, providing substantial sound insulation. 4-12mm thicknesses on either skin; Available in clear, low-iron and tinted glass options of the customers’ choice; Can be toughened or heat strengthened Dec 11, 2012 · Sound reduction index values for several laminated glass units with acoustic interlayers. awjvpkl dzsvflsp yvwjro nsbp ehnvmuze dhhciz ukds dxta iix gldgkt vgics kqdq exhn pjmt musfj