Compressor Acoustic Panels cut noise by 10 to 12 dB on 5 to 10 hp vertical/horizontal compressors with tank size up to 120 gal. Sealed via Velcro closure over entire edge, panels mount to heavy-duty 1-3/16 in. extruded aluminum frame. Units have waterproof, chemical-resistant quilted surface that is nonporous and coated with fiberglass vinyl. Manufactured of fire-retardant material meeting ASTM-E84 Class 1, panels operate in temperatures from -20 to +180°F.