Merv 11 Pleated Air Filter - 12" x 21" x 1" Quantity:12-pack A higher MERV rating means

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

You never have to hassle with disposable filters that will end up in a landfill again

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

and the greater the pressure drop it creates

28X Increased Efficiency

Merv 11 Pleated Air Filter - 12" x 21" x 1" Quantity:12-pack A higher MERV rating meansAny 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.