Practical Pleated Air Filter (2-Pack) - 13 3/4" x 23 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

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

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

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

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

such as dust

oxidation and deterioration

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

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

Because we specialize in custom air filters

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

and the greater the pressure drop it creates