Merv 8 Pleated Air Filter - 13 3/8" x 13 3/8" x 1" Quantity:12-pack You may know them as

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

Includes one Frame and PACK of 6 pads

so it can provide a lifetime of dependable service

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

from the air stream

Merv 8 Pleated Air Filter - 13 3/8" x 13 3/8" x 1" Quantity:12-pack You may know them asAny 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.