25x30 x 1 In. Hog Hair Washable Air Filter

AAF Flanders 25"x30'x1" Hog Hair Washable Furnace Filter. It is made of coconut shell fibers, coated with synthetic material. This filter needs no frame, has a MERV rating of 4, and is a 30-day filter. It is effective against dust/lint. The maze of fibers in a Permaire filter creates an electrostatic charge to catch and hold airborne contaminants. Longer service life, Completely odor free, Washable and self-supporting, Filter removes 20-30 percent of particulate matter and gaseous material from the airstream.