Endurex 535
Product Description
The Endurex 535 is a fire-resistant, sound-reducing panel that can be glazed into acoustical window or curtain wall systems. The panel is fabricated with sound resistant substrates and a fire-resistant insulating core. It is most often used when maximum fire-resistance is desired.

Often used for schools and hospitals, the Endurex 535 is Class "A" Fire-Rated and carries a limited 20-year warranty with a Kynar or Anodized finished aluminum.

Endurex 535 panels are manufactured to meet the requirements of a standard 1" insulated glazing panel. Panels can be up to 4 1/2" in thickness with an STC rating up to 55. We presently have two STC rated panels tested in accordance with ASTM E-413: 3 1/4" thick with a tested STC rating of 42 and 4" thick with a tested STC rating of 45. Panels can be tested in other thicknesses and other panel make-ups to meet STC ratings up to 55.

Endurex 535 insulated panels provide energy saving, long lasting beauty for the exterior of your building or store-front.
Cement Board Stabilizer
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A stabilizer chosen primarily for its fire-resistance. Cement Board also has very good moisture resistance, impact resistance and rigidity. Also the most expensive of all standard stabilizer options.

A 1/2" or 5/8" gypsum stabilizer can be substituted for the cement board stabilizer on the innerside of the panel, if desired.

Insulation Options
From economical standard 2lb EPS foam to fire retardant PolyIsoCyanurate Foam, the Endurex 535 panel can be configured to provide insulating values to an R-30.
EPS (Expanded PolyStyrene)
Extruded Closed Cell Foam
PolyIsoCyanurate Foam
Fire test and Sound test documentation is available. Please call (800) 358-8018 for details.
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Materials and Resources
MR 4.1 and 4.2
MR 5.1 and 5.2
This resin based paint system (also known as PVDF), protects aluminum and keeps painted metal looking vibrant and like new. It is available in dozens of standard colors. Custom colors also available.
A full range of anodized colors are available.
Not all colors/finishes available on composite stabilizer.
Most colors available in 48" wide only. Call for colors available in 60" wide.
All colors available in smooth aluminum. Call for colors available in embossed aluminum.
Normal lead time for panels with Standard Kynar Color Aluminum is 4-5 weeks. Custom Kynar colors are 6-8 weeks after color match is approved.
Anodized Aluminum faced panels should be optimized directionally.

Panel colors within this website are RGB equivalent. For the best color representation contact your sales representative for a product sample.

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Available Sizes
4' x 8'
4' x 10'
(Finished panels also offered cut-to-size.)
Class A
Cement Board
4 mm
Foam Thickness
EPS 2lb Density Foam
Extruded Closed Cell Foam
Polyisocyanurate Foam
1/2" to 4"
1/2" to 4"
1/2" to 4"
Aluminum Thickness
.015"   .032"
.020"   .040"
.024"   .060"
(Some aluminum thicknesses may have minimum quantities and longer lead times.)
Aluminum Widths
48" Available in all colors.
60" Available in limited colors. (Call for options and availability.)
Aluminum Lengths
Custom lengths available based on volume and lead times.