BetterVent ORIGINAL Replacement Polyester Filters for the BetterVent Indoor Dryer Vent, 6 pack REPLACEMENT FILTERS - Capture finer dust lint with the BETTERVENT Indoor Dryer Vent Replacement Filters. SIX FILTERS - Contains 6 color coded filters. EASY TO CLEAN - Filter can be vacuumed for longer use. Flow rated to trap fine lint and dust particles. IMPROVES AIR QUALITY - Protects your indoor air quality and drys clothes faster, saving you time and energy. Savings increase in colder months by returning warm dryer air into the room. USE WITH THE BETTERVENT- A double filter system captures lint and dust for healthier indoor environment. No water needed, eliminating messy cleanups. Equipped with a Safety Vent Flap to remind you to clean your filter.