Merv 13 Pleated Air Filter - 10 1/2" x 12 1/2" x 2" Quantity:12-pack the greater it's resistance to

the greater it's resistance to airflow

They are constructed from 304 Stainless Steel material formed to exact specifications

and long service life which reduces HVAC equipment maintenance and energy costs

The unit also includes a magnetic mounting bracket for optional installation inside air handlers

from the air stream

Merv 13 Pleated Air Filter - 10 1/2" x 12 1/2" 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.