Merv 11 Pleated Air Filter - 17 1/4" x 21 1/8" x 1" Quantity:12-pack built to last a lifetime

built to last a lifetime

You may know them as washable air or even permanent air filters

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

This is designed to fit into 1" Return Air Grilles

Eliminates Filter Bypass

Merv 11 Pleated Air Filter - 17 1/4" x 21 1/8" x 1" Quantity:12-pack built to last a lifetimeAny 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.