Merv 11 Pleated Air Filter - 20" x 22" x 1" Quantity:12-pack Filtering inserts are shipped in

Filtering inserts are shipped in an easily stored packet

from the air stream

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

You may know them as washable air or even permanent air filters

Merv 11 Pleated Air Filter - 20" x 22" x 1" Quantity:12-pack Filtering inserts are shipped inAny 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.