Nordic Pure 20x20x5 (19_5/8 x 19_7/8 x 4_3/8) Honeywell/Lennox Replacement MERV 10 Air Filter 1 Pack

Nominal Size: 20 x 20 x 5 H, Actual Size: 19 5/8 x 19 7/8 x 4 3/8 (19.63 x 19.88 x 4.38) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. Replaces Honeywell 20x20x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for normal air filtration Nordic Pure MERV 10 is equivalent to MPR 1000 Made in the USA