10-pack MERV 8 non-woven pre-filter, 100% compatible with AF500, Drieaz HEPA 500, BlueDri AS550 air scrubbers Why you need this - Easy replacement: remove the old filter, install the new one, and reset the scrubber to continue operation. - First filtration stage: captures larger particles to reduce the load on the higher efficiency filter and extend overall life. - Low initial resistance with large dust capacity, lightweight and easy to replace, ensuring efficient performance of the filter system. Key attributes - Material: non-woven, MERV 8 - Size/fit: designed to match standard pre-filter dimensions for the listed models - Pack: 10 filters Use scenarios - Mold remediation, construction dust control, and general site cleanups with AF500, Drieaz HEPA 500, or BlueDri AS550 scrubbers - Home renovation, painting, or drywall sanding to protect the main filter - Office, workshop, or industrial cleaning tasks requiring staged filtration and extended filter life