Practical Pleated Air Filter (2-Pack) - 13 1/2" x 29 1/4" 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

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

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

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

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

oxidation and deterioration

Includes one Frame and PACK of 6 pads

And there are no metal parts that could lead to corrosion or oxidation within the filter

the A+2000 uses stage loading

from the air stream

some just refer to them as electrostatic filters

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

Available in packs of 4