Flanders EZ Flow II MERV 4 Economy Fiberglass Air Filter, 25x25x1 in., 12 per Case

Purolator 5038901317 F312 Std1 Fiberglass Disposable Throwaway Panel Filter 25W x 25H x 1D The Purolator F312 are panel filers utilizing the unique Purolator Monobond concept of a one-piece frame sealed to the media using heat and pressure. The superior grade fiberglass media is evenly coated with a gel adhesive to prevent finer particle migration. The average arrestance is 72%.