Merv 11 Pleated Air Filter - 8 7/8" x 19 1/8" x 1" Quantity:12-pack the greater it's resistance to

the greater it's resistance to airflow

Filtering inserts are anti-microbial and are more efficient in capturing particles

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

We look forward to delivering our American-made

In general

Merv 11 Pleated Air Filter - 8 7/8" x 19 1/8" 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.