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Lennox Filter Lennox Filter - Air Filter, Furnace 21x26x4 (21 1/4" x 26" x 4") MERV 10, X6667 (Genuine Brand):

Lennox Filter - Air Filter, Furnace For Models: : X6667

Fits model number PCO-20C

Nominal size 21x26x4
Actual size 21 1/4" x 26" x 4"

ONLY: $35.12 each - Order More & SAVE
Lennox Filter Lennox Filter - Air Filter, Furnace 21x26x4 (21 1/4x26x4) MERV 16, X6667 - X6669- 75X67 (Genuine Brand):

Lennox Filter - Air Filter, Furnace For Models: : X6669

Fits Lennox model number PCO-20C

Nominal size 21x26x4
Actual size 21 1/4" x 26" x 4"

ONLY: $119.86 each - Order More & SAVE