Actual Dimensions: 15.75 x 26.13 x 3. Accumulair brand 16x26x3 Lennox X1180 replacement whole house air filters, specifically engineered to replace OEM Lennox X1180 filters. Fully box-formed with no forming or combs required. MERV graded to ASHRAE standards assuring particulate filtration equal to the original manufacturer Lennox X1180 filter. Notice: Sample air filter picture displayed is not true to size and is included to show configuration purposes. OEM names and Lennox X1180 P/N displayed for air filter substitution purposes.
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