Merv 11 Pleated Air Filter - 14" x 24 3/4" x 1" Quantity:12-pack Unlike some permanent custom air

Unlike some permanent custom air filters

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

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

the A+2000 uses no foam that may clog

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

Merv 11 Pleated Air Filter - 14" x 24 3/4" x 1" Quantity:12-pack Unlike some permanent custom 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.