+3 Polyester Pre-Filter, 16x16x1, Fits Dri-Eaz HEPA 500 4024824 $3.66 In stock Quantity: 1 Add to Bag Product Details UPC: 0.00 Brand: no Polyester Pre-Filter, 16x16x1, Fits Dri-Eaz HEPA 500 - Lower cost than pleated MERV 10 filters - Use this is conjunction with your pleated filter to save money by not replacing it so often Save this product for later Favorite