Merv 13 Pleated Air Filter - 9 1/2" x 19 1/2" x 1"Any 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.

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

PACK of 6 pads for Pad and Frame Air Filters

these can be purchased in any conceivable size

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

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

such as dust

oxidation and deterioration

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

Either way

if not you can measure it or check the HVAC unit and the owner‰۪s manual

some just refer to them as electrostatic filters

and the greater the pressure drop it creates