High Quality Aftermarket Replacement Air Intake Replacement Air Filter for Sullivan-Palatek 00521-060. 5 1/32" Outside Diameter X 3 5/32" Inside Diameter X 12 5/16" 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. Steel reinforced frame.