Size/Options:

• Replacement filter for Dustless Technologies' HEPA Wet Dry Pro vacuums
• Filters more than 99.97% of particles larger than 0.3 microns - 150 times smaller than a human hair
• When used with Wunderbags by Dustless, it provides two-stage filtration and extends HEPA filter life
• Water-resistant and washable - allows dry to wet vacuuming without changing the filter