Lennox X6673 (5-Pack) - 20" x 25" x 5" Healthy Climate HCF20-11 Air Filter, MERV 11

Lennox X6673 20x25x5 MERV 11 Furnace Filter - 5 Pack: 98% efficient filtration media capturing particles as small as 0.3 microns Prevents particles from collecting on coils High-efficiency alternative to 1" filters 20" x 25" x 5" furnace filter has greater dust-holding ability