$54.99 Plastimo Plastic Vent Shaft Grilles Cover - 70mm - Fox's Chandlery
Plastic Air Vent Grille Cover Wall Duct Ventilation Air Outlet Grille Cap with 3 Flaps, 4-inch - Walmart.com
Amazon.com: 6 x 6 Inch Gray Air Vent Cover with Built-in Pest Guard Screen, HVAC Vent Duct Cover, Vent Cap, Quality Plastic : Appliances
