8 Vent Mate Ventmate Allergen Control Air Vent Filters (Pack of 8) Fits Most Vent Sizes Electrostatic Filtration Captures Pollen, Dust Mites, Smoke, Spores & Pet Dander Allergen Control - Breathe Cleaner Air Optimized for maximum air flow & dust retention - Freshens air for 8 weeks Electrostatic filtration captures pollen, dust mites, smoke, spores & pet dander Fits most sizes