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Home  | Indoor (178)  | Air Quality Improvement (43)  | Safe Home® Air Purification Furnace Filters (31)

Safe Home Duo Air Purify Furnace Filter 16x20x4 In.

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$43.90 (44%)
6.0 Pounds
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Currently In Stock (2/26/2020)
Safe Home Duo4 Air Pollution Filter for 4 or 5 Inch Furnace Slots 16 x 20 Inches

SafeHome's most powerful disposable filter for HVAC systems: up to 6 times the filtering power of  SafeHome's one inch thick Duo furnace air filter. Replace 4" or 5" filters. The Duo4 traps hazardous chemicals, odors and allergens. This is a 16 by 20 by 4 inch thick furnace filter with both a pollen,dust, dirt filter and a VOC activated carbon potassium permanganate treated filter.   Note:  Always check with your HVAC technician before changing from your current furnace filter. This unit is a MERV 8.  Made in USA.

Safe Home™ Duo4  filters  are the only home air replacement filters to capture allergens, odors, and harmful chemicals. Gaskets around the edges mean maximum 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 Duo 4 lasts 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 to trap 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: 16" x 20" x 4"  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.
  • 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.
  • Changing Your Filter: The Duo4 should be changed at least every 6 months. Homes with high amounts of dust or pets that shed may require more frequent changes.
  • 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.
  • 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

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