Amazon.com: Lennox X6673 20 x 25 x 5 Inch MERV 11 Efficient Air Filter Replacement for Healthy Climate HC11 Air Purifier Cleaner Purification Systems (3 Pack) : Home & Kitchen
Amazon.com: Lennox X6673 20 x 25 x 5 Inch MERV 11 Efficient Air Filter Replacement for Healthy Climate HC11 Air Purifier Cleaner Purification Systems (3 Pack) : Home & Kitchen
Amazon.com: Lennox X6673 20 x 25 x 5 Inch MERV 11 Efficient Air Filter Replacement for Healthy Climate HC11 Air Purifier Cleaner Purification Systems (3 Pack) : Home & Kitchen
Lennox X8310 Filter 20x25x5 Expandable Media MERV 11 $50.99
Lennox X8310 MERV 10 Expandable Filter 20" x 25" x 5" - Replacement Furnace Filters - Amazon.com