AL 7-24-04028-2 Synthetic Poly Panel Air Filter for American Lincoln 7700 Sweeper/Scrubbers. A pleated water-washable spun-bond poly media panel air hopper dust filter. Sturdy galvanized frame with premium poron gasket material. Washable poly media is "bump pleated" to insure proper spacing between pleats. Poly filters are used in wet or damp sweeping conditions where standard paper filters deteriorate. Poly filter media can stand up to compressed air and can be sprayed with a garden hose to wash (be sure to fully dry synthetic filters before re-installing). Measures 13-1/8" x 44". Fits Nilfisk American-Lincoln model 7700 sweeper/scrubbers (will not fit 7760, 7770 models). One filter required per unit. Priced Each. Replaces Nilfisk American-Lincoln 7-24-04028-2. Our Part Number AL 7-24-04028-2