Endurex™ 535
EXTERIOR INSULATED IN-FILL PANELS
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.
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.
Resources

