Making sure you have a clean air filter is an easy way to protect against mold, odors and allergens. Micro filtration helps protect against allergens, pet dander, dust, pollen, mold spores and more. MERV 15 filter captures particles as small as 0.3 microns, including sneeze droplets, most tobacco smoke, cooking oil, paint pigments, hairspray, auto emissions and fine powders. Ideal for most homes with multiple pets and individuals with allergies, asthma, respiratory illnesses and compromised immune systems. Moisture-resistant ULTRA media has small fibers and ample surface area for effective air filtration. Helps reduce energy consumption and maintenance on system hygiene (coil and duct). Thin Line design creates a compact footprint. Filter lasts between 9 and 12 months. Actual size: 24-3/8"H x 15-3/8"W x 5-7/8"D.