Amazon.com: VENT COVER ADHESIVE Register Cover for Air Vents & Looks like a Vent Grille! An AC Vent Deflector that's Peel n Stick - Pure White Sheet - 8 inch X 15
Babyproof Childproof Floor Vent Covers/Registers - Fits 3"x10" and 4"x10" vent openings | GuardaVent by Karymi
Synthetic Fiber Plastic Air Vent For Industrial at Rs 250/piece in Chennai
Amazon.com: Dryer Vent Covers, 2-Pack Adjustable 4" to 5" to 6" Outdoor Vent Covers with 8 Screws, Wall-mounted Plastic Louvered Vent for Dryer White : Appliances
Plastic Vent Cover | Imperial Baseboard Return Air Grill
AC Draft Shield | Grille & Register Plastic Vent Covers