Air Vent Ceiling Grille Outlet Inlet Ventilation Fan Ducting 6" Dia 150mm ABS
Air Vent Ceiling Grille Outet Inlet Ventilation Fan Duct Ducting 4" 5" 6" (AN). Air Vent Ceiling Grille Outet Inlet Ventilation Fan Duct. A movable plate installed inside the Exhaust Valve precisely directs the air inlet or outlet.