Moisture immune frame.. Made with MERV rated synthetic poly blend pleated media Replaces Honeywell 16x25x4 and filters with an MPR rating with an actual depth of 4 3/8 and ideal for normal air filtration Hypoallergenic, antimicrobial, and electrostatic filter media. Nominal Size: 16 x 25 x 5 H, Actual Size: 15 3/4 x 24 3/4 x 4 3/8 (15.75 x 24.75 x 4.38) Measure your air filter for the exact size and compare it to our actual size to ensure proper fit
