"The MILWAUKEE Large Wet/Dry Vacuum High-Efficiency Filter is compatible with multiple Milwaukee Wet/Dry Vacuums (0910, 0920, 0930, 0931). An installed High-Efficiency Filter captures 99 percent of all particles greater than 0.5 microns for fine dust collection, ensuring dust and microparticle collection of debris such as sawdust, drywall dust, and wood/metal shavings. Quickly swap or clean filters with the easy access quarter-turn design. The Milwaukee Large Wet/Dry Vacuum High-Efficiency Filter is dry cleanable and washable with water when necessary. This product contains (1) High-Efficiency Filter. "