Contains smoke and flames.

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CMAST Component
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Product Advantages

  • The clearest, most economical fire and safety rated glazing meeting all requirements for 45 minute doors, sidelites, transoms and windows/openings in large sizes.
  • Meets the required hose stream test.
  • Meets the CPSC Cat. II impact safety test without the need of films or laminates.
  • Non-wired and tint-free.
  • Can be used in interior and exterior applications.
  • Approved glazing component in the NFRC CMAST database.
  • US Pat. No. 11,479,504 with additional patents pending.
  • Lifetime warranty.
  • USA manufactured for fast lead times and competitive pricing.

maximum sizes

Fire RatingApplicationMax. CV AreaMax. CV WidthMax. CV HeightStops
45 MinutesDoors 3,288 in.²
(2.12 m²)
33 in.
(0.84 m)
99-5/8 in.
(2.53 m)
5/8 in.
(16 mm)
45 MinutesSidelites, Transoms,
3,880 in.²
(2.50 m²)
96 in.
(2.44 m)
96 in.
(2.44 m)
5/8 in.
(16 mm)

Product Specifications

Thickness 3/4 in. (19 mm)
Weight 9 lbs. / sq. ft. (44 kg/m²)
Fire Rating 45 minutes with hose stream
Sound Transmission Rating STC 37
Impact Safety Rating CPSC 16 CFR 1201 Cat. I and II,
ANSI Z97.1 Class A and B,
CAN/CGSB 12.1 Class A and B
Visible Light Transmittance 83%
Application Doors, Sidelites, Transoms, Windows/Openings
Outdoor-Indoor Transmission Class OITC 35

listings and standards

SuperClear® 45-HS is listed and labeled by Underwriters Laboratories and Intertek, nationally recognized testing laboratories approved by OSHA.


  • Intertek: 48346; 48350; 48962
  • UL: KCMZ.R14212; KCMZ7.R14212 
  • CSFM: 4075-1660:0500
  • LARR: 26174
  • HPD: 28449
  • Declare: SFT-0003


  • UL 9, UL 10B, UL 10C
  • NFPA 80, NFPA 252, NFPA 257
  • CAN/ULC S104, CAN/ULC S106
  • CPSC 16 CFR 1201 Cat. I & II
  • ANSI Z97.1
  • CAN/CGSB 21.1
GPX® Architectural Series Fire Protective
GPX® Vision Kit
GPX® Builders Series Fire Protective
GPX® EZ Frame

Related Case Studies

Learn more about fire rated glass and framing through our case studies. We highlight innovative design applications in real-world settings and show how architects continue to push the boundaries of what fire rated glass and framing can do.

New 45 Minute Fire Rated Glass Makes Visual Connectivity Possible, Beautiful and Affordable at Campus Housing

The design limitations of fire rated ceramic glass have finally given way to a revolutionary new product like SuperClear 45-HS-LI, a truly clear 45 minute fire rated glass that meets all fire, safety and hose stream requirements at a fraction of the price of ceramics. See how the design team at EYP used SuperClear 45-HS-LI to their advantage at the 1,197-bed Quad on the University of Houston campus.