MERV 16
pleated
Lennox Model X6669 MERV 16 Filter for PCO-20C - 21 x 26 x 4
Factory original filter from Lennox. The Healthy Climate PureAir MERV 16 filter offers the highest level of filration efficiency for residential systems. Cartridge can last up to one year, though product replacement life cycle depends on the individual conditions and needs of your home.
Nominal size
21x26x4"
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Replaces these filters
This filter is a direct replacement for the following manufacturer part numbers.
Lennox
X6667
National Filter Sales
21x26x4
Other 21x26x4 filtration levels
Specs and performance data are the manufacturer's published test results. Always confirm the size printed on your current filter's frame before ordering.
Lennox Model X6669 MERV 16 Filter for PCO-20C - 21 x 26 x 4
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