High Quality USA Made Replacement Air Intake Replacement Air Filter for DV Systems D24322. 2.25" Outside Diameter (At Widest part) X 2" Inside Diameter (at lower section) X 1" Height. Features: Rated for 99+% removal efficiency at 2 micron. Low pressure drop for improved equipment performance. Heavy Duty Pleated Industrial Paper to Remove More Debris. 8 SCFM.