Merv 11 Pleated Air Filter - 10" x 20" x 1" Quantity:12-pack One way to overcome this

One way to overcome this problem is to increase the surface area of the filter media

the greater it's resistance to airflow

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

And there are no metal parts that could lead to corrosion or oxidation within the filter

oxidation and deterioration

Merv 11 Pleated Air Filter - 10" x 20" x 1" Quantity:12-pack One way to overcome thisAny 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.