Quick Overview

• Square filter geometry makes dust less likely to get trapped - High suction power is maintained
• Filters stay in the vacuum cleaner even when wet vacuuming
• Cartridge design makes filter installation extremely easy
• Polyester filters capture 99.93% of particles 3.0 microns in dia. or larger
• Sturdy, protective filter frames
• Comes standard with the 3931 and 3931A Vacuum Cleaners