+3 Filter for Dri-Eaz HEPA 500 Air Scrubber F321S $125.46 In stock Quantity: 1 Add to Bag Product Details Filter for the Dri-Eaz HEPA 500 Air Scrubber True HEPA efficiency (99.97% efficiency) against particles 0.3 microns or larger Measures 16" x 19" x 2.5" Save this product for later Favorite