Tier1 16x25x4 Merv 13 Ultimate Air Filter / Furnace Filter 6 Pack (Actual Size: 15 1/2 x 24 1/2 x 3 3/4)

Filter Specifications: 16" x 25" x 4" Made in the 13 replacement air filter (comparable with 1500 - 1900 & 10); Actual Size: 15-1/2" x 24-1/2" x 3-5/8" Standard Compatibility: This air filter works with systems that take 4" filters. Measure your air filter and compare it to our "Actual Size" to ensure proper fit. It is comparable to the 3M Filtrete 1900 Ultimate Allergen, Honeywell 10 Elite Allergen, Aerostar 13 Health, and Filterbuy 13 Platinum series of filters. Effective Filtration: Low pressure drop electrostatically charged 13 filter media traps unwanted microscopic air particles such as lint, dust mites, spores, pollen, pet dander, very fine dust, auto emissions, smoke, and odors. High-Quality Construction: Features 100% synthetic thermally bonded fibers with no chemical binders continuously bonded to a galvanized metal support grid and supported by a high wet strength moisture resistant beverage board frame. Easy to Replace: Installing or replacing Tier1 air filters is quick and easy. Simply remove your old filter from the return to your furnace, and slide in the new filter. It's recommended to change your filters every 90 days to maintain optimal filtration.