Merv 11 Pleated Air Filter - 19 5/8" x 21 5/8" x 1" Quantity:12-pack Either way

Either way

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

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

They are easy to install with custom air filters made to the sizes that you specify

Includes one Frame and PACK of 6 pads

Merv 11 Pleated Air Filter - 19 5/8" x 21 5/8" x 1" Quantity:12-pack Either wayAny 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.