Fujita Super Flow High Performance Replacement Filters - P/N: F5-450S Product Model: FUJ-F5-450S 4.50" Filter, 4.625" x 6.00" FUJITA SUPER FLOW HIGH PERFORMANCE AIR FILTER Fujita’s Super Flow High Performance Air Filter was designed to maximize air flow. The high gloss Fujita air horn enables air to enter the intake chamber in a high velocity spiral motion. The base of the filter was technically engineered to ensure a smooth and rapid passage of the air into the intake chamber. Cleaning the air filter is simple and can be done using soapy, lukewarm water, and let air dry. The Super Flow High Performance Air Filter™ contains a synthetic fiber that does not contain any oil. Available sizes are 2.50”, 2.75”, 3.00” 3.50” , 4.50",3.50" Long, and 4.00" Long opening bases. The filters dimensions are 4.625” top, 6.00” base, and 6.75” in length (3.50" Long and 4.00" Long filters available in 10" length only)