The Honeywell CF112D1620/U Superior Household Air Filter lasts up to 3 months and is the highest quality electrostatically charged filter available. The MERV 12 rating of this filter is equivalent to the best current MERV rating on any residential air filter. Exclusive Premium Media Filter Technology removes airborne polutants down to the microparticle level which maximizes Indoor air quality with existing furnace equipment. 95% efficient at filtering large household air particles from the air passing through the filter from the best name in high perfomance media filtration.
From the Manufacturer
Honeywell Micro Defense MERV 12 Superior Household Air Filter, 4-Pack, Easy Flow Energy Efficiency: Outperforms all other filters in its class; 95% efficient at filtering large household air particles from the air passing through the filter like Pollen, Household Dust, Airborne Dust Mite Debris, Mold Spores, Common Allergans, Clothing Fibers, Carpet Fibers; 82% efficient at filtering medium household air particles from the air passing through the filter like Pet Dander, Hairspray, Dusting Aids, Household Cleaner, Auto Emissions; Lasts up to 3 months and will Improve Indoor Air Quality. Highest quality electrostatically charged filter available.