Merv 13 Pleated Air Filter - 13" x 24" x 1" Quantity:12-pack You never have to hassle

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

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

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

and the greater the pressure drop it creates

Merv 13 Pleated Air Filter - 13" x 24" x 1" Quantity:12-pack You never have to hassleAny 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.