aFe Momentum PG7 Univ Air Filter (6 x 4)in F (8.25 x 6.25)in B (7.25 x aFe MagnumFLOW Air Filters PG7 A F 4in F x 6in B x 4 1 2 T x 8 1 2 H aFe MagnumFLOW Air Filters IAF PG7 A F PG7 7F x 9B x 7T (Inv) x 7H in aFe MagnumFLOW Air Filters PRO 5R 4in F x 9x7.5in B x 6.75x5.5in T x 7 Magnum FORCE AFE 21 90067 p Intake Replacement Air Filter 4 1 2 IN F x aFe MagnumFLOW Air Filters IAF P5R A F P5R 6.75x4.75F x 8.25x6.25B x 7. With seven layers of progressively finer mesh cotton gauze synthetic media between 100 percent polyurethane top and base, this high flow "oiled" conical performance filter provide maximum protection with highest cumulative filtration efficiency for severe duty environments. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Integrated urethane bump seal insures tight, no leak seal over the life of the filter.