Shop Lennox 20 x 25 x 4 3/8" X0586 Options at FurnaceFilters.Ca
BestAir 20 x 25 x 4 Lennox FPR 10 Carbon Air Cleaner Filter LN2025-13C - The Home Depot
Lennox X6673 MERV 13 20x25x5 Replacement Filter. Actual Size 19 3/4" x 24 3/4" x 4 3/8." Made in Canada by Furnace Filters.Ca Pkg. of 3
MERV 11 Furnace Filter 20x25x4 Air Cleaner Filter Case of 3
MERV 13 Replacement for Lennox 20x25x5 (19.88x24.75x4.38) - FilterBuy.com
Filtrete 20x25x4(SlimFit), AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 2-Pack, Fits Lennox & Honeywell Devices (exact dimensions 19.5 x 24.5 x 3.75) - Amazon.com
Lennox X0587 Furnace Filter 20x26x5 Healthy Climate MERV 11 for BMAC-20CE. Package of 2.
Lennox Part #X0445: 20x25x6 Pleated Air Filter (Merv 10) (2-Pack) – Direct Air Filter