Moisture impervious frame.. Made with MERV rated synthetic poly blend pleated media Replaces Honeywell 16x20x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for customers with health problems or for commercial units Hypoallergenic, antimicrobial, and electrostatic filter media. Nominal Size: 16 x 20 x 5 H, Actual Size: 15 7/8 x 19 5/8 x 4 3/8 (15.88 x 19.63 x 4.38) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit
