Merv 13 Pleated Air Filter - 13 1/8" x 21 5/8" x 1" Quantity:12-pack Keeps HVAC system cleaner and

Keeps HVAC system cleaner and more efficient

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

and the greater the pressure drop it creates

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

degrade and restrict air flow

Merv 13 Pleated Air Filter - 13 1/8" x 21 5/8" x 1" Quantity:12-pack Keeps HVAC system cleaner andAny 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.