Aprilaire 201 Replacement Space-Gard / SpaceGard Air Filter. Filter fits 2250 & 2200. Dimensions: 20" x 25" x 6". Absolutely Essential for Allergy Sufferers. Designed & Engineered by Crucial Air. This is a generic product designed and engineered in the United States by Crucial Air. This is not a Aprilaire® OEM product and is not covered under any Aprilaire® manufacturer's warranty. The Aprilaire® brand names and logos are the registered trademarks of their respective owners. Any use of the Aprilaire® brand name or model designation for this product is made solely for purposes of demonstrating compatibility.