Buy 20x25x6 (19 3/4 x 24 1/2 x 6) Aftermarket Lennox® X0445 Replacement Filters | AirFilters.com
Amazon.com: 201 Replacement Filter MERV 13 Compatible with Aprilaire 2200, 2250, Space Gard 2200 Whole House Air Cleaner Purifiers and Lennox PMAC-20C (Lennox X0445), MERV-13 Air Filter, 2-Pack : Home & Kitchen
Lennox X0445 MERV 10 Filter for PMAC-20C - 25" x 20" x 6" - Genuine Lennox Product - Amazon.com
Amazon.com: Carkio 2Pack 201 Whole House Air Purifier Filter,MERV 10 Air Filter Compatible with Aprilaire 2200 2250, Space Gard 2200 Air Purifier,Replacement for Lennox PMAC-20C Part #X0445 : Home & Kitchen
Lennox X0445 MERV 10 Filter for PMAC-20C - 25" x 20" x 6" - Genuine Lennox Product - Amazon.com
Lennox X0445 2pk | Air Filters | Home Filters | DiscountFilters.com
Lennox X0445 2pk | Air Filters | Home Filters | DiscountFilters.com
Lennox X0445 Aprilaire 201 PMAC-20C Filter Media - $53.99