Dual Allergen VOC Furnace Filter by SafeHome Removes Odors and Dirt Install this 16 inch by 25 inch by 1 inch MERV 8 air purifier furnace filter and notice the difference in days. The Safe Home TM Duo is really two filters surrounding a metal frame. Unlike standard furnace filters, the SafeHome Duo is the only home air replacement filter that captures allergens, odors, and harmful chemicals plus fits in a standard one inch furnace panel slot or a return air grille with removable face for filter insert. Self sealing edges maximize effectiveness at capturing allergens, odors, and chemicals from the air in your house. No air escapes around the furnace filter. Use for furnace filter slots, temporary needs, or custom sizes in air return grills. The Duo replaces any 1 thick home air filter in any location and can last up to 3 months. How does the Duo work? The polyester outer layers remove pollen, mold spores, and other common allergens. The inner layer features FormaldaSorb TM and activated carbon that traps a variety of odors and hazardous gasses, such as formaldehyde, ammonia, and others that are emitted by cleaning chemicals, paint, particle board, and other household items. No other filters are as effective at removing dust mites, mold spores, pollen, odors, cleaning chemicals, ozone, paint fumes, and common gasses like formaldehyde which triggers asthma and allergies. Safe Home Duo Filter Features Dimensions 16 x 25 x 1 Captures up to 95% of common household allergens Eliminates odors from pets, paint, cooking, and more Uses high density carbon and advanced compounds FormaldaSorb TM , a patented potassium permanganate product plus the activated carbon in the second layer of the filter trap gasses that can cause health issues. Highly effective and affordable. 2 stage air filter one MERV 8 rated polyester white allergen filter plus the activated carbon filter pad. Made in USA. Safe Home Duo One Inch Thick Filter Installation Determine direct This item ships from a separate warehouse and may require extra time for delivery.