Merv 11 Pleated Air Filter - 13 3/8" x 21 3/8" x 1" Quantity:12-pack The Pad and Frame Air

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

built to last a lifetime

Includes one Frame and PACK of 6 pads

viruses and mold

One way to overcome this problem is to increase the surface area of the filter media

Merv 11 Pleated Air Filter - 13 3/8" x 21 3/8" x 1" Quantity:12-pack The Pad and Frame AirAny 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.