Performance description
Material: galvanized sheet
Specification: matched with the size of air duct
Structure; The inner wall of the silencing chamber is a double-layer micro perforated plate (excluding any fiber silencing materials)
Features: the diameter of the orifice plate on the inner wall of the anechoic cavity is 1mm, and the perforation rate is 3%
Silencing volume: 12dB (a)
Resistance loss: 20Pa (wind speed 6m / s)
