Nordic Pure 20x20x4 (3 5/8) Pleated MERV 14 Air Filter 1 Pack

Nominal Size: 20 x 20 x 4, Actual Size: 19 1/2 x 19 1/2 x 3 5/8 (19.5 x 19.5 x 3.63) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit. Made with MERV rated synthetic poly blend pleated media If you are replacing a Honeywell or Lennox 20x20x4 or an air filter with an MPR rating with an actual depth of 4 3/8, please see our 20x20x5 (4 3/8 actual depth) Hypoallergenic, antimicrobial, and electrostatic filter media. Moisture resistant frame.