Performance description
Material: galvanized steel plate
Specification: matched with the size of air duct
Structure: the louver is filled with centrifugal glass wool, the back is covered with glass cloth and medium 5mm aperture perforated plate, and the front is coated with plating
Zinc plate, with silencing and rainproof functions
Silencing amount: 10dB (a)
Resistance loss: 40Pa (wind speed 6m / s)
