20x20x4 Inch Thick Two Layered Furnace Filter

HVAC Furnace Filter is 4 x 20 x 20 Inches and Removes Dirt, Odors and Chemicals

For modern HVAC furnace systems , the Safe Home Duo 4 inch furnace filter is your best choice for clean, less polluted air. This is our most powerfu l air filter for dirt, chemical fumes and other odors. This HVAC filter has up to 6 times the capacity of the one inch Duo furnace filter. Designed to replace either 4" or 5" filters, the SafeHome Duo4 traps hazardous chemicals , odors and allergens unlike any other filter. This air purifier filter is 20 inches by 20 inches by 4 inches thick and easily slides into an HVAC 4 or 5 inch filter slot.

Note: All furnace filters with external frames are made slightly smaller than the noted dimensions in order to fit into the furnace filter slots. This is an industry standard.

The Safe Home™ Duo4 looks different for a simple reason, it is . Choose Safe Home's furnace filters which are the only home air replacement filters that capture allergens, odors plus harmful chemicals. The Duo4 features a superior design with self sealing edges for maxim effectiveness at capturing allergens, odors, and chemicals from the air in your house. Use for furnace filter slots, temporary needs, or custom sizes in air return grills. The Duo4 replaces any 4" thick home air filter in any location and can last up to 9 months.

How does the Duo4 work? - The polyester outer layers remove pollen, mold spores, and other common allergens. The inner layer features FormaldaSorb™ 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 Duo4 Filter Features:

Dimensions: 20" x 20" x 4"
Captures up to 95% of common household allergens
Eliminates odors from pets, paint, cooking, and more
Uses high density carbon and advanced compounds
FormaldaSorb™, 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.
Twin filter pad: MERV 8 polyester white ASHRAE rated allergen filter plus an industrial chemical and odor filter, i.e. the activated carbon filter pad. Install so that the air flow first goes through the allergen filter side and exits through the darker, chemical and odor filtration media.
Made in USA.

Note: This furnace filter is not a control device for radon, carbon monoxide or carbon dioxide.

Limited Warranty: Free of manufacturing and material defects. If product is found defective within 30 days of purchase, it will be replaced at no additional charge. Product is not packaged for sale outside of the United States. Please measure carefully or choose a filter size identical to the one in your furnace. Units that are removed from wrappings or bent from being pushed into filter slots are not returnable.

Product is not packaged for sale outside of the United States

Safe Home Duo Air Purify Furnace Filter 20x20x4 In.