Practical Pleated Air Filter (2-Pack) - 21 3/4" x 21 3/4" x 5"Yes, we even have the odd sizes! The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters. In general, the more efficient a filter is at removing particles, the greater it's resistance to airflow, and the greater the pressure drop it creates. One way to overcome this problem is to increase the surface area of the filter media. The "Practical Pleat" contains over 500% greater surface

Can be ordered in packages of 2 each only

Some of the other benefits of A+2000 custom air filters include the following

the greater it's resistance to airflow

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

oxidation and deterioration

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

Includes one Frame and PACK of 6 pads

some just refer to them as electrostatic filters

and the greater the pressure drop it creates

Filtering inserts are shipped in an easily stored packet

One way to overcome this problem is to increase the surface area of the filter media

Unlike some permanent custom air filters