Filtrete 20x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Honeywell & AprilAire Space-Gard, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 19.88 x 24.63 x 4.31)

Model:NADP03-4IN-4;
Size:20 x 25 x 4;
Pattern:Air Filter;
Style:CHANGE YOUR FILTER OFTEN: For optimal performance, make sure to change your 4-inch filter at least once every 12 months;
Material:Polypropylene;
Included Components:4 Filters;