View NFRC Values Chart | Light Transmission and Solar Heat Gain Coefficients
Panel Width: 4' and 5' (1.2m and 1.5m) standard. Custom widths are available, generally designed according to size and slope of the skylight, enclosure or canopy system.
Panel Length: Varies according to bay spacing; typical maximum 10' 0" (3m).
Panel Thickness: 2-3/4" (70mm) standards; and 4" (100mm) optional. NOTE: Aerogel insulated panels are 2-3/4" (70 mm) only. Click for more information on 4" panels.
Structural System: Pre-fabricated aluminum box beam superstructure utilizing 6005 T-5 or 6061 T-6 alloys. Sizes vary according to skylight size and loading conditions.
Weight: Most panels and systems weigh under 5 PSF (24.4 kg/m2).
Color: Standards: Crystal, White. Optional tinted panels. The translucent fiberglass insulation can be dyed virtually any color to create dazzling results. White only available for extra-high-impact options.
Surface Texture: Flat is standard.
Standard Grid Patterns: Nominal grid size - 12" x 24" (300mm x 600mm) standard; 8" x 20" (200mm x 500 mm) and 12" x 12" (300mm x 300mm) optional. Other designs and grid sizes available and may be required for some optional panel types. Please not that spans will vary with different grid patterns. Consult factory.
Materials: The standard panel material is comprised of translucent FRP faces. Optional materials include vision glazing, sliding glass and man doors, photovoltaic glazing, aluminum grid, composite grid, fiberglass or aerogel insulation, aluminum, insulated and thermally broken installation systems.
High-Performance Aluminum Architectural Coatings: Corrosion-resistant finishes in standard and custom colors. View color samples.
U-Value Range: .53 to .05 (U-value SI conversion: 1.0 W/m2k=0.176
BTU/(hr/ft2/°F)) for panels; NFRC system certification range .43 to .10. View NFRC values chart.
Light Transmission: 0 to 65%. View chart.
Impact: Standard exterior faces will withstand 70 ft.-lbs. impact. Optional hi-impact faces will withstand 230 ft.-lbs. (311J) impact, Hurricane-Resistant and Blast-Resistant Systems also available at even higher resistance.
Chemical Resistance: Most anything allowed by EPA and OSHA will not affect the panel systems.
Weathering: The panel's exterior face is made with innovative super-weathering and colorfast resins the full thickness... not a low-grade substrate overlaid with thin plastic film or gel to simulate weatherability. All standard exterior faces include a permanent glass veil erosion barrier to prevent "fiber bloom"! This is just one built-in quality bonus not offered by look-alikes!
Sound: STC rating of 31 to 35 depending on panel thickness and insulation type.
Fire: Although some Kalwall panels contain combustible binder resins (ignition temperature greater than 800ºF), they will withstand a 1200ºF flame for one hour with no flame penetration (SWRI). Kalwall panels pass the Class "A" Burning Brand Test (ASTM E-108). A special configuration of Kalwall is a UL Listed Class A Roof system. All interior faces are 1 in. or less Burn Extent, by ASTM D-635. Several categories of interior flame-spread/smoke developed by UL 723 tunnel tests, including Class 1, are available. Kalwall is listed by: ICC #PFC-1705; several state and local areas and U.L. Canada. British Standard 476, Parts 3, 6, 7 and the European Technical Community; FM Class I and NFPA 268 – Radiant Panel Test-Exterior Walls. Whenever reference is made to fire tests, the numerical rating is not intended to reflect hazards presented by this or any other material under actual fire conditions.
Bond Strength: Panels are a specially engineered composite designed for maximum architectural and structural life. Panels and adhesives are tested according to the stringent requirements of "Criteria for Sandwich Panels" issued by ICC (International Code Council) and must pass severe tensile and shear tests before and after numerous exposure conditions. Before specifying an alternate, insist on actual field proof of bond integrity over a 25-year period. Caution is urged in accepting "look-alikes" as equivalents.
Expansion: The coefficient of linear thermal expansion of Structures Unlimited panels is 1.24 x 10-5 in/in/ºF. (2.23 x 10-5 mm/mm/ºC). An 8' panel will expand lengthwise approximately 1/8" when the temperature rises 100ºF or a 2 m long panel will expand approximately 2 mm when the temperature rises 40ºC.