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Duraflow Filtration's�� electrostatic furnace filter is a permanent filter which will last for years with proper care. The electrostatic materials we use capture dust, dirt, pollen, pet dander, allergens, pet hair, and other household irritants. The heavy duty aluminum frame with water drain holes makes for easy cleaning. These filters should be washed every 3 months, and more frequently if you have many pets. . MERV 9 rated. Filters are nominal sized, meaning for instance a 16 x 20 is actually 15-1/2 x 19-1/2" Exceptions are 16-3/8 x 21-1/2 and 19-7/8 x 21-1/2, these two are exact sized.
Permanent that filter, lasts years with proper care
Electrostatic materials captures dust, dirt, pollen pet dander, allergens, pet hair, and other household irritants
Heavy Duty aluminum frame with water drain holes for easy cleaning
Tough and Durable construction to last years. Wash every 3 months, more frequently if you have many pets.
Many sizes available,
Nominal sizes are 1/2" undercut in width and lenght*
* 16-3/8 x 211/2 and 19-7/8 x 21-1/2 are exact size*
Actual frame thickness is 7/8"
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