Aprilaire 213 Replacement Filter MERV 13 - Only $82.99!
Aprilaire | 213 Filter – Standard Heating & Air Conditioning
Amazon.com: AprilAire 213 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 13, Healthy Home Allergy, 20x25x4 Air Filter (Pack of 1) : Home & Kitchen
Aprilaire 213 (2 Pack) MERV 13 Replacement Filter (20 x 26 x 4")