Merv 8 Pleated Air Filter - 18 1/4" x 21 1/2" x 2" Quantity:12-pack This design enables A+2000 custom

This design enables A+2000 custom air filters to maintain performance over the years

To find the size the old unit should have sizing information printed on it

the A+2000 uses stage loading

the more efficient a filter is at removing particles

some just refer to them as electrostatic filters

Merv 8 Pleated Air Filter - 18 1/4" x 21 1/2" x 2" Quantity:12-pack This design enables A+2000 customAny 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.