PB 3305645HE High Efficiency Panel Air Filter for Minuteman / Power Boss Sweepers and Sweeper/Scrubbers. A special ProTura nanofiber media filter for sweeper hoppers. One step of filtration below HEPA filtration, the nanofibers are 50% smaller than the Ultra-Web fibers and as a result, outperform Ultra-Web and especially cellulose (paper) filters. ProTura has a MERV rating of 15. Measures 15 x 20 x 2.75". Sturdy galvanized frame includes black or grey poron gasket. Fits many Minuteman / Power Boss models including CSS/62E, TSS/62E, TSS/65, CSS/80HD, CSS/82, TSS/82. CSS/85LD, ISS/80, ISS/82, TSS/82HD, TSS/85LD, TSS/85HD, SW/78LD, SW/75, SW/75-II, SW/75E, SW80HD, 8290 (82 Series) and 9082 (82 Series). We also offer this same filter in a water-washable synthetic. Search for 3334168 or 3305645SYN. Most units require one filter. Some filters such as 8290 (82 Series - TSS/82, ISS/82, and CSS/82) Combination Sweeper/Scrubbers and 9082 (82 Series) require two filters. Please check your model before ordering. Priced each. Our Part Number 3305645HE, 305645HE, 3300390HE, 300390HE