Merv 13 Pleated Air Filter - 15 1/4" x 35 5/8" x 2" Quantity:12-pack the greater it's resistance to

the greater it's resistance to airflow

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

the A+2000 uses stage loading

Merv 13 Pleated Air Filter - 15 1/4" x 35 5/8" x 2" 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.