Lennox Replacement Filters (2 Pack) 21x26x4 Part # X6667, X6669, and 75X67 MERV 8, 11
MERV 8 or MERV 11, choose in dropdown menu above.
Replacement air filters fit into existing air filter housings. Replacements are pre-assembled for easy installation.
- Replacement for Lennox part # X6667, X6669, and 75X67
- Fits Lennox model #PCO-20C
- Nominal size 21" x 26" x 4" (Actual size 21 1/4" x 26" x 4")
- Filter Media - 100 % synthetic gradient media
- Filter Support Grid – 30 gauge galvanized expanded metal grid
- Frame –moisture resistant 28 point beverage board
- Assembly Technique – Media pack totally bound to frame
- Max Temperature – 108 degrees Fahrenheit continuous service, Peaks 225 degrees Fahrenheit
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