DeFendAir HEPA 500 Filters, aluminum frame, 99.97% efficiency (4 filters per case) Green Klean Brand superior quality commercial filters are specifically designed for the Janitorial Professional vacuum cleaners and are backed by the Green Diamond Warranty. OEM# F321 Made from the highest-quality materials to achieve filtration efficiencies up to 99.9%, Allergen filtration Designed specifically for commercial use; equal to/exceeds OEM quality
***Vacuum filtration bags are to be used with machines only, they are not to be repurposed for any other use.***












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