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S4 Absorption Panel

S4 Absorption Panel

This fully encapsulated sound absorber can be cleaned with steam or a soap solution and is very economical. The durable fiber reinforced face is available in white or reflective silver.

S4 panel is an economical and easily cleanable sound absorber. The S4 panel is constructed from a 3 PCF fiberglass core completely encapsulated with a fiberglass reinforced, aluminized polyester film facing. S4 is available in 1" and 2" thicknesses and panel sizes up to 48" x 120". The S4 panel can be used in temperatures from -65 F to 265 F.

The S4 panel is well suited for projects where moisture resistant sound absorber panels are required. Applications include natatoriums, shooting ranges, dog kennels, arenas, and mechanical rooms.


A fully encapsulated moisture resistant fiberglass sound absorber.


Fiberglass core encapsulated in a fiber reinforced film

Acoustical Performance

Sound Absorption per ASTM C423. Type A Mounting
Frequency, Hz 125 250 500 1000 2000 4000 NRC
1" Thick 0.13 0.32 0.95 1.08 0.62 0.46 0.75
2" Thick 0.26 0.80 1.23 1.00 0.71 0.43 0.95



S4 Sound Absorber
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