Dri-Eaz F271 Pre-Filter - Case of 12 $109.99 MERV 8 High Capacity Pleated Filter Fits Dri-Eaz Defendair HEPA 500 machines Replacement part number F271 16x16x1 (Actual Size: 15.75" x 15.75" x .75") Free Shipping Quantity 1 2 3 4 5 6 7 8 9 10+ Quantity Add to cart Buy Now