Complete Filtration Services is a full service provider of filter products and
equipment. We provide a wide range of filter products to the Residential Commercial and Industrial
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Lennox OEM 21x26x4 MERV 16 PCO-20C High Capacity Replacement Filter
This Genuine OEM Lennox replacement filter (X6669) fits models PCO-20C. This MERV 16 filter has a nominal size of 21 x 26 x 4 and an actual size of 21 1/4 x 26 x 4.
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