Merv 13 Pleated Air Filter - 13 7/8" x 13 7/8" x 1" Quantity:12-pack the greater it's resistance to

the greater it's resistance to airflow

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

Includes one Frame and PACK of 6 pads

the A+2000 uses stage loading

The permanent frame is constructed of space-age plastics that are resistant to corrosion

Merv 13 Pleated Air Filter - 13 7/8" x 13 7/8" x 1" Quantity:12-pack the greater it's resistance toAny 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.