Merv 8 Pleated Air Filter - 17 3/8" x 35 1/8" x 1" Quantity:12-pack They are easy to install

They are easy to install with custom air filters made to the sizes that you specify

Unlike some permanent custom air filters

and the greater the pressure drop it creates

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

Merv 8 Pleated Air Filter - 17 3/8" x 35 1/8" x 1" Quantity:12-pack They are easy to installAny 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.