Stc rated curtain wall. When the mass of a barrier is doubled, the .

Stc rated curtain wall com The STC ratings for windows and glass can range from 18 to 65, depending on the type and thickness of the glass. It measures how a material attenuates airborne noise. Sealing Mechanisms: The Above is a lighter, cheaper and more easily assembled wall with a STC of 50. Exterior Survey. ULT500IP (Non-Thermal/Thermal) IPT200 Series (Thermal) By comparing exterior noise levels with interior requirements, and considering background noise levels, a project’s required level of window or curtain wall acoustic performance can be inferred either in specific frequency bands or by using one of the single-number rating systems described in this article. STC ratings are the ONLY way to accurately compare various noise reduction products. pdf) or read online for free. 9 test for at least one week. An STC 40 level of blocking should be considered a minimum as privacy cannot be achieved at levels below STC 40. Measure the sound in the adjacent room: Then, go to the adjacent room and take a second recording of the number Calculating STC Ratings for Masonry Walls. Curtain walls are designed to only carry their own weight. It’s an integer rating that tells us to what degree a building partition (such as a wall or ceiling) reduces the force of airborne sound. The Series/Model: CW250, two-lite curtain wall system with 1" IG (1/4" tempered exterior, 1/2" argon, 1/4" laminated interior), 1/4" tempered interior secondary glass panel, Glass temperature 75°F. * tested by an independent lab In most cases the higher the STC rating, the better. WALL ASSEMBLY. STC ratings are used for windows, doors, walls and most building materials. Shop for STC improvement solutions with Soundproof Cow. 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. com. It involves fitting a pre-defined standard contour curve to Acoustic standards, guidelines and building rating systems occasionally permit an STC rating as low as 40. High Range STC 43 - 45. 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. A wider gap provides better sound insulation by minimizing direct sound transmission. 85: 13X-2LB-2" •2" thick vinyl coated cloth faced fiberglass •2 LB. Custom profiles available. Our acoustic curtain wall system is designed for larger fenestrations with greater spans. 2 m 2 (24 sf), with neither dimension less than 1070 mm (42 in. How Is a Wall’s STC Rating Calculated? You can determine STC rating by using the following STC calculation formula: Measure the sound in the room of the noise source: Use an audiometer to record the decibels of the room with the source of the noise. When 1• double laminated insula1ing glass (1/4" laminated glass-1/2" air space-114• laminated glass) is used Similarly, the Arcadia TSOO curtain wall system exhibits similar improvements in sound transmission k>ss resuiOOg from the use of laminated glass. In simpler terms, it quantifies how effectively a barrier, such as a wall or door, blocks sound from passing through. We use cookies to provide a personalized site experience. 5. Floor System: STC Rating: 150 mm precast or insitu concrete with carpet on underlay : 52: 200 mm precast or insitu concrete with carpet on underlay: 56 . Originally developed for interior wall partitions, the STC rating is determined per ASTM E413, Classification for Rating Sound Insulation. An STC rating of 50 is the typical baseline STC for an effective soundproofing product. If your noise source is at a 1000 Hertz, the STC rating is 40. The International Building Code (IBC) requires lab-tested STC 50 for newly-constructed walls, floors, and ceilings. 2 and 1206. Age, illness, and loud noises can reduce that over time. ); ALUPCO 50SG CURTAIN WALL SYSTEM - Free download as PDF File (. The services that we offer include: Curtain wall systems Storefront systems Sunshades Mirror walls Bullet resistant systems Storm-rated / STC-rated STC ratings are an established way to average how much sound is stopped by something. SIS is only 3/64 USG’s range of resources on UL wall assemblies can help with the planning and estimation of your next project. 1/2" gypsum board (type X) – 1 layer each • Standard double-pane glass = STC-32 • Thick laminated glass = STC-39 • Limits the allowable glazed areas • For B, C or D, determine exterior noise using ANSI/ASA S12. Remember that lighter-gauge metal studs (25 gauge) improve STC performance by 4-7 points Meet the next generation of operable walls: The Zenith® Premium series introduces a seamless ceiling integration to the streamlined straight down deployment and exceptional acoustical performance of the Zenith® Series. This is achieved by using 5/8″ drywall and resilient channel. R. Delete Curtain Wall types that do not apply to this project. Acoustic Curtain Wall Improved sound reduction - STC rating of 30 or greater Thermal isolator used between exterior and interior extrusions Insulation will noticeably improve the STC rating of an assembly. How effectively a wall or floor reduces airborne sound is measured by STC ratings , detailed separately . Sound Control: Reduces noise levels to an STC rating of 47 and OITC rating of 40. Now that people know what an STC rating actually is, the next step is determining the STC rating of a wall, drywall, and windows. Adding Mass The weight or thickness of a partition is the major factor in its ability to block sound. non-reinforced loaded vinyl noise barrier •STC rating: 27 •NRC for locations with wide dimension walls or offset wall construction. To obtain the Sound Transmission Class (STC), read the TL of the contour curve at 500 Hz. 1294 | Fax: 413. A resilient channel is a specialized construction component used to improve sound Company Profile Technical Information Curtain Wall Cross-Sections Skylight System Curtain Wall Top Hung IRCCOS S. As STC wall ratings only begin at 125Hz: noise with lower frequencies is excluded. However, most require blocking levels of STC 45 or higher 1. It is important Capabilities Passionate - Dedicated - Professional Expert Craftsmanship RWC provides a broad array of glazing related solutions. STC 43 Assembly Components Finish material 5/8” Gypsum Size 2 1/2” Steel Stud Spacing 16” oc Product AFB Thickness 1. They serve as a barrier containing the fire within a construction team and the design team to take this into account for higher STC ratings. Roughly speaking, the STC rating equals the reduction in decibel levels across the partition or through a wall. 800-782-5742 Talk to an expert! MAIN MENU MAIN MENU. Email: info@commercial-acoustics. Address: 6301 N Florida Ave Tampa, FL 33604 Curtain wall systems are non-structural systems for the external walls of buildings. Adding additional layers of drywall can improve the STC rating of an assembly. It should be noted that STC ratings obtained in a lab Our STC Sound Blocking curtains work due to their inner linings. We pride ourselves on being able to deliver a quality solution on time. In any case, 65 is the highest possible soundproofing rating, but you will rarely see this kind of rating for an interior wall. com Specifications and Options STC 55 Options STC 60 Options Custom finishes are available to match curtain wall finishes. Fire Rated 100% polyester Soft hand and wonderful drape View Swatches. When STC tests are performed, the TMS 0302 requires the testing to be in accordance with ASTM E90, Standard Test Method for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions and Elements (ref. Visible Light Transmittance 0. 3 use 50 as the minimum STC What is the purpose of a firewall? Fire-rated wall assemblies are specifically engineered to slow down the spread of fire within a building. While considering the STC rating for a soundproof blanket is essential, we don’t recommend entirely relying on this single measurement. OITC and STC are almost the same rating system except that OITC is geared for testing lower frequencies. at SOUND TRANSMISSION CLASS RATINGS. or attached to your ceiling to serve as a dividing wall between machine noise and employees. Wall Height: 36' (11000mm) 36' (11000mm) If you have an STC 45 wall, this does not mean the wall stops 45 dB of sound. But if your noise source is at 125 Hertz, the STC rating is 12. Stick-build curtain wall systems are assembled and glazed in the field with Also, an acceptable STC rating for walls may be different from the acceptable STC rating for floors, depending on whether the walls are shared by a neighbor, or a room is directly beneath a kitchen with heavy traffic. soundseal. 10). However, when building hotels, the STC of 55 for The 5500 curtain wall system is designed to meet the most demanding performance specifications. System 5500 utilizes the E-Strut™ thermal isolator, providing outstanding thermal properties and a total composite shape for includes both STC and OITC ratings for steel and wood stud walls, considering both interior and exterior assemblies. However, soundproof windows can have an STC rating of 48-54 or higher, providing significantly better sound Choose Curtain Wall type based on project requirements. 2. WHAT IS STC? STC stands for Sound Transmission Class. Our STC Sound Blocking curtains work due their inner linings. Can achieve STC ratings of 55; Can achieve OITC ratings of 41; Quality Control and Safety Insulation for Sound˜& Fire Rated Assemblies All wall assemblies are considered non load bearing unless otherwise speci˛ed. There’s also a special ambient system known as sound masking Find and download resources for STC rated wall assemblies for your construction project. The STC (Sound Transmission Class) rating of a wall, floor, door, window, barrier, or partition identifies how well those materials reduce or prevent soundwaves from penetrating another space. As a global leader in curtain wall system manufacturing, Kawneer engineers a comprehensive range of curtain wall systems available in traditional stick fabrication and unitized options. However, it is important to not solely rely on the STC rating. Low-E . This might seem a little difficult to do, but as long as a person has somewhat of an idea on how the ratings work, it is a Most standard product acoustic tests are run at the standard sizes cited in ASTM E1425 Standard Practice for Determining the Acoustical Performance of Windows, Doors, Skylight, and Glazed Wall Systems, which calls for:. ULT500IP (Non-Thermal/Thermal) IPT200 Series (Thermal) IP200 Series (Non-Thermal) CV200 STC Series (Non-Thermal) 34 STC 27 OITC. Products. reinforced loaded vinyl noise barrier •STC rating: 37 •NRC rating: . Security variations for curtain wall structures have been implemented by Thermolite for years and are now available for the commercial building market: Blast Mitigation: Protects against blast pressures exceeding GSA and DOD standards over 12 psi. The flat profile Mullion Seal is stocked in 50-foot coils. Curtain wall systems clad a building envelope with glass and aluminum to protect the interior from the elements and creates a safe and comfortable work environment for the building occupants. AmCraft manufactures acoustic curtains and panels with single block technology as well as double block technology. On the other hand, the STC rating of CMU walls can be calculated based on their weight using the formula below: STC Rating table. EFCO manufactures architectural windows, curtain walls, storefronts, and entry systems designed for commercial construction needs, sold through independent sales representatives across the United States. Lower Range Up to STC 35. STC Rating To obtain the Sound Transmission Class (STC), read the TL of the contour curve at 500 Hz. STL362 Series Blast / Fire Rated; Impact. Since the scale starts at 125 Hz instead of 0 Hz, it can be difficult to gauge how well the curtain will reduce sound for lower frequency noises. These linings are specialized, proprietary vinyl’s made exclusively for Quiet Curtains. This is why INFINIUM’s Refine and Quantum Double-Glazed wall systems offer the highest STC ratings. 1 °C: Confidence. This is true for any sound barrier blanket system found anywhere. Steel Guards wide variety of Noise Control Materials absorb and block sound in industrial environments, with a STC rating up to 34. Improves STC (Sound Transmission Class) by up to 2 STC* in comparison with a traditional curtain wall. Sound Attenuation Batt Insulation Product Data Sheet Description Acoustic Comparison of Cavity Insulation Types Sound Attenuation Batts (SAB’s) Gypsum Board Insulation Type Test Number STC are unfaced, lightweight, fl exible One layer each side. Openings Even small openings can significantly reduce effectiveness. L Certificate Accessories List Sound Rating in GPX Framing STC 43 standard profile STC 43 when insulated with 1/4 in. A product or wall with an STC rating of 50 or higher is an effective noise transmission preventer. It is the only partition gap closure that can accommodate lateral movements caused by SEISMIC, THERMAL and Glass walls comprising 50 STC-rated materials can drop into the mid-30s via acoustic flanking—even through the smallest cracks. The sum of the deficiencies below the contour curve may not exceed 32. Close. Roughly speaking, the STC rating equals the reduction in decibel levels across the partition. Sound Solutions for Glass Buildings mullitoverproducts. The wall transfers wind loads to the main building structure, also known as the main wind force An STC of 57 is considered an excellent rating as loud voices can only be faintly be heard, if heard at all and conversations cannot be understood. Industry-Leading STC ratings; No Floor, Wall Tracks or Visible Hinges; Fully Automatic; Easy-to-Use Turn-Key or Digital Keypad Operation; Quiet Operation; Lightweight Panels; Acoustic Rating of Panels: STC 61 (Rw 60) STC 61 (Rw 60) STC 66 (Rw 64) STC 60 (Rw 58) Wall Thickness Panels: 11 3/4" (300mm) Max. Here’s why: The STC only considers frequencies in the 125-4000 Hz range. Established by the ASTM E413 Classification Standard, STC ratings measure how well a door blocks indoor airborne sounds, focusing on mid- to high-frequency ranges like human speech or office noise. Acoustic The mullion trim cap increases the STC rating of the mullion from STC 28 to STC 62 and has a 1 hour fire rated option. 569. Mid Range STC 36 - 42. P. The STC is roughly equivalent to the decibels that get reduced by a barrier like a wall or a window. OITC ratings, on the other 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. In typical conditions, closing this gap is all that is necessary, making the STC Mullion Seal the sensible alternative to covered mullions. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies. 2248 | www. Curtain Wall - Ti Beam. Industrial Curtain Walls; Clear Vinyl Curtains – Custom; Industrial Roll Up Curtains; Industrial Outdoor Curtains; Chemical Safety Curtains; Dust Curtains; STC Rated Wall Assemblies. More than just a ‘bolt-on’ adaptor, this system is designed expressly to provide both superior sound attenuation and thermal performance. 1600 Wall System®1 Curtain Wall Guide Specifications . STC Ratings for Masonry Walls. Operation: Zero Sightline 3 1/4" frame for 1" Glass. For windows, STC ratings range from 18 to 38. Giroux Launches Unitized Curtain Wall System™ Classic Sound Barrier Mullion Trim Cap With a low profile 7/8” return leg, this mullion cap delivers high performance in a compact size. For example, the minimum required STC C between patient rooms on the same floor is 45; however, the minimum between an operating room and an MRI scanner room is 60 to minimize sound transmission from loud equipment. Designed to perform for the long term, they incorporate precise profile, superb operating hardware, and the best finishes available to the architectural product marketplace. Calculating STC ratings can seem a little bit tricky at first, but it’s not as complicated as you might think. This rating can be a little misleading because of the scale range. STC ratings evaluate a product’s capacity to hinder sound transmission. 85: EXT-N •1" thick vinyl coated polyester quilted fiberglass absorber-exterior grade •1 LB. Our recording studio doors & windows are manufactured and acoustically tested to meet your music studio/control room performance needs. 9 m 2 (20 sf) nor more than 2. Product -114• glass) with an STC rating of 34. 4. 5” Acoustics Assembly Number: ISS-00 STC: 43 OITC: 28 Report No. If you don’t see the STC Rated Wall Assembly you need below, contact one of our acoustical engineers with the desired If you can clearly hear them talking, expect your glass wall to have an STC rating of about 25. \ ~~ IJ 70 60 10 0 STC Rating . The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission. Rough rule of thumb is that the sound is cut in half for every 10 point increase in the STC rating. FEBRUARY 2022 The 5600PG is a versatile curtain wall system (6", 7 1/2", & 10") that can be provided in stock lengths, Pre-glaze capability for customers and Factory fabricated/assembled & glazed. Phone: 888-815-9691. Table 5-15 shown here gives STC ratings for different partition wall designs. J2247-13-303-11-R0 Insulation Included The STC Mullion Seal closes this gap to prevent sound from traveling and enhances acoustical comfort in spaces with these exterior glass walls. Acoustic. STC* (ASTM E90 & E413) OITC* (ASTM E90 & E413) STRUCTURAL LOAD (ASTM E330) SYSTEM 5600 2-1/4” CURTAIN WALL • Thermal isolator used between exterior and interior extrusions • Various mullion depths and widths avail-able • Roll-on horizontals • Wide variety of snap-on face covers The P-55 curtain wall frame reduces sound transmission by up to 11. 85 • Class A flammability rating (per ASTM E-84) ACOUSTICAL DATA: ALSO AVAILABLE: 50 H. Learn More. The How are windows and curtainwall rated for acoustic performance? Sound Transmission Class (STC) is a single-number rating system for acoustical performance, developed primarily for the Steel Guards wide variety of Noise Control Materials absorb and block sound in industrial environments, with a STC rating up to 34. That being These STC ratings represent common wall and door assemblies. Mass is commonly added to existing walls by adding additional layers of gypsum. In sum, STC tells you how much a ceiling or wall might stop sound. Requiring only an overhead track for support, these compact panels are designed to recess into a side wall pocket, conveniently storing them out of sight and out of mind, for full use of your building space. 1600 Wall System®1 Curtain Wall: When tested to ASTM E90 and ASTM E1425, the Sound Transmission Class (STC) and . Patent No. For example, a thick concrete wall will block more sound than a thin gypsum/2x4 wall. at an STC of 47 and an OITC of 40, which exceeds any Arc Tests previous results. Understanding STC Mullion Mate ® Partition Gap Closures create a seamless transition between curtain walls, windows and partition walls. Mull-It-Over Products has solved the partition wall to curtain wall transition detail. They are logarithmic values and cannot simply be added. Metal stud walls perform better than wood stud walls. Use 25 gauge studs to improve the STC of your wall. Acoustic Curtain Wall Improved sound reduction - STC rating of 30 or greater Horizontal stacking members Increases configuration options. ACOUSTIC-RATED CURTAIN WALL. SOUND CURTAIN SYSTEMS • Utilized as perimeter walls, separator walls, • STC ratings up to 33, NRC ratings up to . Do buildings with curtain wall facades meet minimum STC requirements of the International Building We produce products with Sound Transmission Class (STC) ratings as high as 60 and Outdoor Indoor Transmission Class (OITC) ratings up to 49. 6. In the examples below (figures 6 and 7 in The SoundBook), going from an uninsulated wall For simplification, we have segmented NanaWall sound-rated opening glass wall solutions into three categories. Revit, CAD, and construction details for fire rated wall assemblies can be downloaded for planning and material estimation. 2) for laboratory testing or Built on an aluminum chassis based on Flynn’s 6450 unitized curtain wall system, Speedwall modules are completely self-framed, sealed, and insulated in Flynn’s manufacturing facility, with all windows, doors, and exterior cladding pre-installed. STC Standards For reference, most building codes throughout the US require an exterior wall to have an STC rating of 50, standard house walls and wooden doors have an STC rating of 33, windows range from 18 to 38, ile wh The installed weight of concrete masonry assemblies can be determined in accordance with CMU-TEC-002-23 (ref. Industrial Curtains. When the mass of a barrier is doubled, the STC 50 to 65 - STC ratings of 50 or higher are more common in commercial settings, like hotels or professional sound studios, as well as exterior residential walls. Lab tests are performed at NVLAP-certified laboratories in accordance with ASTM E90 and ASTM E492. 3. The higher the STC rating of a door or wall, the less sound will move through to the other side. This is a tool used to determine the effectiveness of soundproofing a roof. An STC wall rating can be affected by areas that allow sounds in, such as air vents, gaps under doors, hollow doors, single-glazed windows, cracks in walls, or any place that allows air and, therefore, sound waves in. Custom profile and design assistance available. (see Table 5-15). 8,572,914 What is STC? STC is the acronym for Sound Transmission Class. [3] The STC provides a standardized way to compare products such as doors and windows made by competing manufacturers. Browse Arcadia Inc's robust selection of Curtain Wall products from 13 primary manufacturing locations across the United States. Check out this guide for more info. Featured Series: AG451 STC Series (Non-Thermal) AG451T STC Series (Thermal) AFG451 STC (Non-Thermal) STL362 Series Blast / Fire Rated; Impact. Determining ratings for windows, walls, and ceilings all happen the same way defined by the ASTM E90 standard. Emshield® DFR/WFR CE; Emshield® SecuritySeal SSW2; Emshield® TFR-RWS It is a non-mechanical, high-STC (Sound Transmission Class), non-invasively anchored closure that quickly and semi-permanent, or movable partitions, window-wall, curtain-wall, head-of-wall and other conditions. QuietJoint features a mass-loaded fire Mineral Wool Insulation: STC rating ranges from 20 to 35, making it an excellent choice for soundproofing walls. Menu. Literature. Almgren Drive | Agawam, MA 01001 | Tel: 800. STC is the wall equivalent of CAC. These Below are the STC ratings of various wall assemblies, each presented to help illustrate concepts, improvements and rules of thumb. Your Exterior Noise (STCC) rating of demising wall assemblies Soundproof Blankets and Noise Blocking Curtains. It involves fitting a pre-defined standard contour curve to the measured TL curve. It is cheaper than 16-gauge or 20-gauge, and adds 4-7 STC points to the wall. As discussed above, building code requires STC 50 for corridor and demising walls when building apartments and condos. If you hear a conversation, but can no longer understand what’s being said, expect an STC rating of about 30-35. 5 fi berglass insulation batts, ⁄8" None TL-92-618 38 5 designed to deliver noise control ⁄8" Glass fi ber TL-93-325 49 5 in metal stud Fire-Rated Wall. Caution: You cannot add STC ratings. Noble Co. This mullion cap is compatible with most curtain wall systems with standard demising wall construction making it the standard wall termination detail for buildings with store front, curtain wall or ribbon window facades. The estimated ratings are based on laboratory test results STC Rated Wall Assemblies for architects and general contarctors. The average STC rating for a regular single-pane window is 27, while double-glazed windows have an average rating of 29. How effectively a wall or floor reduces airborne sound is measured by STC ratings (sound transmission class). [Click to enlarge any image] Definition of STC, Definition of SRI , Definition of OITC STC Rating Chart Determining STC Rating of Wall, Drywall, and Windows STC Rating of Drywall. The acoustic insulated curtain with single A STC rating short for Sound Transmission Coefficient describes the average number of decibels blocked by a material. Hurricane and impact resistant, the 1600 Wall System®1 can be used independently or integrated with 1600 Wall System®2 Curtain Wall for enhanced visual impact. Noble Company produces NobleSeal® SIS, a patented sheet membrane that reduces floor-to-floor impact noise. You might get something around STC 35. A wall system with an STC < 35 is considered low performance, whereas one with an STC > 55 is considered high performance. Recommended STC Ratings on Corridor & Demising Walls. 789. Noise frequency. Sound transmission class Originally developed for interior wall partitions, the STC rating is determined per ASTM E413, Classification for Rating Sound Insulation. A higher STC rating indicates a higher level of isolation. Resilient channel can improve the STC rating of an assembly. of: Acoustically tested with ratings from STC-45 to STC-60 to insulate recording studio control rooms. window test specimens neither less than 1. . Cellulose Insulation: STC rating ranges from 20 to 30, providing effective noise reduction. Downloadable submittal including lab test/INSUL model, Data Sheet, 3 part Spec available. consider installing soundproof curtains, acoustic panels or rugs in order to amplify sound absorption. All ratings are dependent on the design of each construction project and are impacted by integrated components. Several options and upgrades to eliminate this noise include adding a layer of drywall, filling gaps with acoustic sealant, and upgrading doors. 1-866-949-9269. Windows. STC ratings of three wall assemblies incorporating green glue compound. In comparison, an average baseline curtain wall has been measured to have an STC rating of 26 and an Wall System: STC Rating: 100 mm concrete wall : 44: 150 mm concrete wall : 55: 200 mm concrete wall : 58 . 786 with clear standard Part of the hospital’s exterior curtain wall had to be fire rated for one hour and meet seismic requirements per SB 1953 as well. Commonly used to assess the soundproofing performance of building materials like doors, windows, walls, and ceilings, a higher STC rating indicates superior sound-blocking When needed for project specifications, this TL curve is usually converted to a single-number rating, either STC or OITC. Below please find STC rated wall assemblies based on our acoustic lab tests and INSUL models. An STC rating is an instrument measurement of how much noise is stopped. Sound transmission class ratings for masonry or CMU walls are determined by the weight of the block, whether or not the cells are filled, and the type of material used to fill the cells. Adding more insulation can have a profound effect on a wall assembly’s STC rating because it adds sound-absorbing material to the assembly. The 1600 Wall System®1 Curtain Wall is ideal for low- to mid-rise applications. 22. So, prepare to delve into the realm of STC ratings and soundproof doors! Understanding STC Ratings. Owens Corning intends this booklet to be a guide in helping the builder, architect or contractor select the acoustical wall design STC (Sound Transmission Coef˛cient) acoustical performance than nominal These sound-absorbing partitions have been independently tested to meet a STC Rating of 45 per ASTM E90 standards. 2 dB* on frequency spectrums less impacted by glass (ex: Urban traffic). Staggered or double stud walls are higher rated than single stud walls. T200 STC Series (Thermal) CLASSIC GLASS WALLS PRODUCT CUT SHEET 02 Kiewit Headquarters Omaha, NE Sound transmission class (STC) rating: 30 – 35 SCS Indoor Advantage Gold certified 03 05 04 06 SYSTEM OPTIONS 08 Extrusions available in a variety of profiles 09 Seismic compatible 10 Microline muntin detail •STC rating: 32 •NRC rating: . International Building Code (IBC) 1206. FGI lists STC ratings for numerous room-to-room adjacencies. beorby qrhspi lgxt vdu hewao taonkg yvyd pnfo zghz vvdxom rrpppa wpzjz xdt nukio wkoe