In Actuality, The Honeywell Home 16X25X4 Merv 8 Ac Furnace Air Filter Improve your home's air quality with Honeywell Home's whole-house air cleaner filter (two-pack). It filters dust, mold, pollen, and smoke. Lasting up to one year, this 16 in. x 25 in. x 4 in. air filter is electrostatically charged and features a pleated design for high-quality filtering. It comes in a cardboard frame and helps reduce odors in your home for an unrivaled breathing experience. This filter also incredibly easy to install and come in accommodating sizes that fit all Honeywell Home and many of Aprilaire, Space-Gard and Trion Air Bear models. MERV 8 rating-up to 20 times more efficient than typical 1 in. fiber glass filter Captures high percentage of house hold airborne particles, including microscopic particles you can't see Filters dust, mold, pollen, and smoke Electrostatically charged pleated design with a cardboard frame Lasts 12 months. Actual dimensions are 15.63 x 24.75 x 4.38 (in.)