Merv 8 Pleated Air Filter - 10" x 14" x 1" Quantity:12-pack and the greater the pressure

and the greater the pressure drop it creates

so it can provide a lifetime of dependable service

To find the size the old unit should have sizing information printed on it

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

oxidation and deterioration

Merv 8 Pleated Air Filter - 10" x 14" x 1" Quantity:12-pack and the greater the pressureAny 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.