Contains smoke, flames and blocks the passage of radiant heat.

UL Icon
Intertek Icon
USA Made Icon
5 Year Warranty
Fire Rated Icon
Hose Stream Icon
Starphire Ultra Clear
CMAST Component
HPD Declare_icon
Ballistic Rated Icon
Blast Rated
Forced Entry
Energy Efficient

Product Advantages

  • Maximum fire and impact safety with hose stream and full radiant heat protection.
  • Largest tested and approved sizes up to 4,876 in.² (3.15 m²) in standard 1-1/2 in. (39 mm) profile.
  • Tint-free and optically clear.  Perfect for property line requirements.
  • Acoustical value of 44 STC.
  • Available with Starphire Ultra-Clear® glass by Vitro.
  • Now available as an approved glazing component in the NFRC CMAST database.
  • Available in custom architectural make-ups, such as laminated glass and energy-saving insulated units with NFRC certifications when used with GPX® Architectural Series Fire Resistive framing.
  • Can be customized to protect against forced entry, bullets, blast, hurricane, sound and more.
  • Standard 5 year limited warranty.
  • USA manufactured for fast lead times and competitive pricing.


maximum sizes

Fire RatingApplicationMax. CV AreaMax. CV WidthMax CV HeightStops
90 MinutesWalls4,876 in.²
(3.15 m²)
124 in.
(3.15 m)
124 in.
(3.15 m)
5/8 in.
(16 mm)*
90 MinutesDoors4,990 in.²
(3.22 m²)
126 in.
(3.2 m)
126 in.
(3.2 m)
5/8 in.
(16 mm)*

Product Specifications

Thickness 1-1/2 in. (39mm) standard
2-1/4 in. (57 mm) when insulated with Low-E
Weight 12 lbs. / sq. ft. (59 kg/m²)
Fire Rating 90 minutes with hose stream
Sound Transmission Rating STC 44
Impact Safety Rating CPSC 16 CFR 1201 Cat. I and II, ANSI Z97.1
Visible Light Transmittance 0.853 with clear standard
0.875 with clear low-iron
Application Doors, Walls
Hard Body Impact Classification ASTM C1629/C1629M Level 3
Soft Body Impact Classification ASTM E695 Level 3
Surface Abrasion Resistance ASTM D4977 Level 3
Outdoor-Indoor Transmission Class OITC 40
NFRC Certifications with GPX Framing 0.34 U-Factor when insulated with Solarban 60
0.27 SHGC when insulated with Solarban 60
55 Condensation Resistance when insulated with Solarban 60

listings and standards

SuperLite® II-XL 90 is listed and labeled by Underwriters Laboratories and Intertek, nationally recognized testing laboratories approved by OSHA.


  • Intertek: 32841; 56534; 29495; 51170
  • UL: KCMZ.R14212; KCMZ7.R14212; U518
  • CSFM: 1080-1660:0105
  • LARR: 25786
  • HPD: 29036


  • UL 9, UL 10B, UL 10C, UL 263
  • NFPA 80, NFPA 251, NFPA 252, NFPA 257
  • ASTM E119, ASTM E152, ASTM E163, ASTM E2074, ASTM E2010-01, ASTM C1629/C1629M, ASTM E695, ASTM D4977
  • CPSC 16 CFR 1201 Cat. II
  • ANSI Z97.1
  • CAN/ULC  S101, CAN/ULC S104, CAN/ULC S106 
  • NFRC 100, NFRC 200, NFRC 500
GPX® Architectural Series Fire Resistive
GPX® Builders Series Temperature Rise
GPX® EZ Frame
GPX® Blast System
GPX® Ballistic Series
GPX® Hurricane
GPX® Curtain Wall

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.

Utah Business School Features Dramatic Fire Rated Glass Wall

The David Eccles School of Business on the University of Utah campus features a 28- x 18-ft 2 hour interior glass wall with a 90 minute full-vision door in an exit enclosure/stairwell. The architects selected fire rated glass to meet fire rating requirements while providing maximum visibility and natural daylighting in the space. The project’s specifications also required the fire rated glass to have the same optical clarity as the adjacent non-rated glass systems.

Medical Center Maximizes Natural Daylight with Fire Rated Glass

Central to the new UC Davis Medical Center Surgery and Emergency Services Pavilion's design was a large skylight that allows natural light to vertically flow into the atrium area and other light wells throughout the building. However, they also wanted to let light flow horizontally into the adjacent hallways, rooms, etc. Because the walls in the atrium and light wells have to meet a 2-hour rating, Stantec Architects approached SAFTI FIRST® for a solution. Large portions of the 2 hour atrium and light well walls were made “transparent” with the use of SuperLite II-XL 120 in GPX Framing.

Fire Rated Glass Helps SFPUC Building Achieve LEED Platinum

The new San Francisco Public Utilities Commission Headquarters combines maximum daylighting and fire safety with a multi-story, fire rated glass stairwell from SAFTI FIRST®. Dubbed as the "greenest building in North America," this Class A LEED Platinum office building features a transparent, 2-hour fire rated stairwell, situated prominently near the main entrance. SAFTI FIRST® supplied SuperLite II-XL 120 in GPX Architectural Series Wall Framing and SuperLite II-XL 90 in GPX Builders Series Temperature Rise Door starting from the lobby all the way to the topmost floor.

Clear, Fire Resistive Butt-Glazed Walls Create Transparent, Connected and Code-compliant Stairwell

The University of Wisconsin School of Business Grainger Hall’s east and west wings are now linked by a state-of-the-art Learning Commons that encourages collaboration through technology and design. To achieve maximum transparency while meeting code requirements, the architects specified 9 ft. tall, clear, fire resistive butt-glazed walls using SuperLite II-XLM in GPX Architectural Series perimeter framing.

Fire Rated Glazing Gets Visitors ‘In the Spirit’ of Historic Bourbon Distillery

As America celebrated National Bourbon Day on June 14, downtown Louisville also celebrated the highly anticipated grand opening of the Old Forester Distillery. This event is also touted as a triumphant return of America’s first bottled bourbon in continuous production by the same family before, during, and after Prohibition to Whiskey Row. See how SAFTI FIRST® fire rated glass walls helped create an immersive visitor center with a fully operational distillery, cooperage and bottling line.

A Clear Solution for Harvard’s Klarman Hall

This new 120,000 square foot, state-of-the-art convening center features a 1,000-seat auditorium that is large enough to host the entire MBA class. The glass atrium floods the multi-purpose lobby with natural light, as well as provides a visual connection between the interior of the building and the outdoor environment. To maximize transparency, SAFTI FIRST met with the architects during the design phase to create a large, 2-hour, glass wall that separates the lobby from the auditorium while providing a visual connection between them. Since this 2-hour glass wall also serves as the entrance to the auditorium, deciding on a 90-minute door system was of upmost important. SAFTI FIRST’s in-house engineering department provided design assistance, system details, engineering calculations and support from the planning phase all the way to the submittal process.

Fire Rated Glass Transforms Retail Parking Garage with Natural Light and Vision

Traditional parking garage designs used to have opaque fire rated building materials like concrete, masonry and drywall which made these spaces dark, cold and uninviting. That all changed, thanks to the emergence of new technology, clear, fire resistive glazing tested to ULC/CAN S101 up to 2 hours that are available in large sizes and low-iron glass make-ups with high visible light transmission for superior clarity and color neutrality.

Chicago Starbucks Reserve Turns Stair-Climbing Into Unforgettable Experience Using Fire Rated Glass

The Starbucks Reserve Roastery in Chicago features an incredible, 4-story mural by local artist Eulojio Ortega. The mural, brilliant for conveying the story as visitors go from floor to floor, is interestingly located in an exit stairwell.  Traditionally, stairwells are enclosed in opaque walls, leaving them dark, isolated, and rarely utilized unless in an emergency.  To allow the mural to be visible through multiple floors, encourage stair usage and meet fire rated code requirements, the architects redesigned the 2- hour stairwell using transparent, floor-to-ceiling butt-glazed glass walls with the largest tested and listed fire resistive glass panels available.

A Nine-Story Lesson in Branding Excellence

SuperLite II-XLM 120 clear butt-glazed walls with 9 ft. GPX Builders Series 90 minute Temperature Rise doors creates a light-filled, transparent 2-hour stairwell that is on-brand with Waste Management’s new Houston Headquarters.

A Clear Solution for One Vanderbilt

Sophisticated. Elegant. Iconic. These are some of the words being used to describe One Vanderbilt Avenue, the 77-story skyscraper that has redefined the Manhattan skyline. At 1,401 feet tall, it is the tallest office tower in Midtown, with a prime location just steps from another world-famous architectural icon, Grand Central Terminal. SAFTI FIRST® provided clear, USA-made, fire resistive, low-iron glass and framing systems to this monumental project.