Merv 11 Pleated Air Filter - 16" x 25" x 1" Quantity:4-pack They are easy to clean

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

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

the A+2000 uses stage loading

and the greater the pressure drop it creates

from the air stream

Merv 11 Pleated Air Filter - 16" x 25" x 1" Quantity:4-pack They are easy to cleanAny 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.