The addition of the DOP filter makes the DefendAir HEPA 500 a high efficiency three-stage air filtration unit, ready for any sensitive job requiring first-pass HEPA filtration.

This replacement HEPA filter fits the HEPA 400 Air Scrubber, Velo and Velo Pro air movers from Dri-Eaz. This filter also restores your Velo HEPA Attachment Kit (F518) to maximum efficiency. It is ideal for use during general air scrubbing applications.