Merv 8 Pleated Air Filter - 21 1/4" x 21 1/4" x 1" Quantity:12-pack allowing your HVAC system to

allowing your HVAC system to operate optimally while reducing energy costs

the greater it's resistance to airflow

You never have to hassle with disposable filters that will end up in a landfill again

Custom electro perm washable filter

if not you can measure it or check the HVAC unit and the owner‰۪s manual

Merv 8 Pleated Air Filter - 21 1/4" x 21 1/4" x 1" Quantity:12-pack allowing your HVAC system toAny Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop, and long service life which reduces HVAC equipment maintenance and energy costs. A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter.