5 x 1 in..5 x 1 Accumulair filters are chemical free so never have to worry about the addition of unnecessary chemicals to your air.FeaturesGreat for helping reduce airborne allergens such as bacteria, particles that carry viruses, pollen, mold spores, fine dust, and pet danderEach filter lasts up to 3 monthsElectrostatically charged filter media captures airborne allergens smaller than 1 micronSpecificationsType: Furnace FilterDimension: 15.
MERV 13 Diamond Filter So if you are looking for a way to help reduce airborne allergens then an Accumulair air filter is the right choice.5 x 1 Accumulair filters are chemical free so never have to worry about the addition of unnecessary chemicals to your air.