Description
Actual dimensions are 20.13 x 26 x 3. Brand: Accumulair. 20x26x3 Lennox PCO-20U replacement whole house air filters, exactly engineered to replace original brand Lennox PCO-20U air filters. Fully box-formed - no forming or combs needed. MERV classified to ASHRAE 52.2 test classifications establishing function to the level of the original manufacturer Lennox PCO-20U filter. Notice: Example filter pic shown is not to scale and is included to show design only. Name brands and Lennox PCO-20U P/N are shown for air filter replacement identification purposes only.