Waterproof louvers

Waterproof louvers WL are manufactured from flush flange frame and horizontal arranged louvers, completely made from aluminum extrusion profile. The louvers are downwards fixed to frame by screws to stop rain or water getting into the indoor. The whole structure is waterproof,corrosion resistance and rigid to get ideal air discharge performance.It is applied to refresh air in building ventilation system or air conditioning heating or cooling duct system.It usually comes with anti-insect or anti-bird filters, square to round adaptor is also available. WL- powder painting coat, WL-A  natural anodised finish. Any size upon requested.