Alloy Breathable Vent Hole, Ventilation Grills, Aluminum Alloy Air Vent Mesh Hood Air Outlets Air-conditioning Outside Unit Shutter(Style B (hole opening,450x450 mm)

VENTILATION GRILLE MADE OF ALUMINUM ALLOY: safe, , Environmentally friendly, durable. TWO STYLES OF VENTILATION HOLES: maintenance type door hinge shutters and decorative small shutters for your choice. style A is for indoor use, style B is for outdoor use. MULTIPLE SIZES OF VENTS: hole opening 200×200 mm, Inner diameter 195×195 mm; hole opening 250×250 mm, Inner diameter 245×245 mm; hole opening 300×300 mm, Inner diameter 295×295 mm; hole opening 350×350 mm, Inner diameter 345×345 mm; hole opening 400×400 mm, Inner diameter 395×395 mm; hole opening 450×450 mm, Inner diameter 445×445 mm; hole opening 500×500 mm, Inner diameter 495×495 mm. MULTIFUNCTIONAL VENT: Rainproof, decoration, ventilation, maintenance, Easy to install and clean. Precise Fit Engineered with accurate dimensions for a snug fit in different applications, ensuring no air leakage.