Aluminum Weatherproof Louver Vent, Square External Wall Air Grille | Huaqi

Huaqi square aluminum rainproof louver vent, external wall exhaust & ventilation grille cover. Made of high-quality aluminum plate with electrostatic powder coating, smooth and even finish, eco-friendly, corrosion resistant and rust-proof for long outdoor service. Integrated rain-proof louver design blocks rainwater effectively. Built-in dense insect mesh on back prevents bugs entering. Pre-drilled screw holes for simple installation. Multiple sizes available:150×150 /200×200 /250×250 /300×300. Ideal for exterior wall fresh air outlet, range hood exhaust, equipment heat dissipation and basement ventilation, widely used in residential, factory, hotel and engineering projects.