HEPA 500 Filters

HEPA replacement filters for DefendAir®* 500 air scrubbers are now available.

ACI’s replacement HEPA air filters are made with equivalent high, quality materials.  Why spend more money than necessary? ACI’s filters are “just as good” and they actually cost much less than the name brand and other aftermarket air filters.

Made right here in Oklahoma by military veterans. ACI is able to provide quality products that costs your company less money and at the same time your purchases allow us to employ returning service veterans to manufacture these replacement HEPA and High AirFlow Filters. It’s a win-win for everyone!

First and second stage filters

Scrubber Filter

HEPA 500 Replacement Filter



PreFilter for Dri Eaz 500
6/Case $38.40

Optional PreFilters

Two prefilters may be used for environments with a high volume of aerosolized particles to extend the life of the HEPA filter.

Carbon PreFilters (Case of 12) $96.00
Our 3/8” thick carbon pad acts as a molecular magnet attracting and holding odors and some chemical contaminates. Activated carbon is recognized to adsorb odors and gases.

Polyester PreFilters (Case of 12) $45.12
Our standard 1/2″ thick polyester media.

*Dri-Eaz® is a registered trademark and has no association with or makes any endorsement of the products provided by ACI Manufacturing Inc. Any use of a brand name or model designation is made solely for the purpose of demonstrating compatibility.