Tier1 Pleated Air Filter - 20x25x4 - MERV 8 - Captures Dust & Pollen in Air Conditioner/Furnace - Improved Air superior - 6 Pack

It's recommended to change your filters every 90 days to maintain optimal filtration.. Simply remove your old filter from the return to your furnace, and slide in the new filter. Easy to Replace: Installing or replacing Tier1 air filters is quick and easy. High-high-grade 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 immune beverage board frame. Effective Filtration: Low pressure drop electrostatically charged MERV 8 filter media traps unwanted microscopic air particles such as lint, dust mites, pollen, and pet dander. It is comparable to the 3M Filtrete MPR 600 Clean Living, Honeywell FPR 5 Micro Defense, Aerostar MERV 8 Clean, and Filterbuy MERV 8 Silver series of filters. Measure your air filter and compare it to our "Actual Size" to ensure proper fit. Filter Specifications: 20" x 25" x 4" Made in the USA MERV 8 replacement air filter (comparable with MPR 600 & FPR 5); Actual Size: 19-1/2" x 24-1/2" x 3-5/8" Standard Compatibility: This air filter works with HVAC systems that take 4" filters