Fiberglass material density of not less than 48 Kilograms per cubic meter, with a thickness of 50 mm.
Incombustible, non-flammable, absorb moisture less than1.5% by weight, not moldy or a nursery bacteria (ASTM C665).
Test standard ASTM C423-99a.
External surface with black spunbond cloth and galvanized steel 0.7 mm. thick coating with powder coat,. Perforated hole size 2.5 mm. Pit size 5.0 mm. was placed in a 90 degree.
Features
The walls are perforated panel to be used for sound absorption. Installed in the room to reduce wall resonance. Have sound absorption properties in the wide frequency range.
Easy installation and strength. Durable to be inserted, acids, alkalis, moisture, have a long lifetime and can be cleaned without affecting the properties of the wall.