Practical Pleated Air Filter (2-Pack) - 21 1/2" x 21 1/2" 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

PACK of 6 pads for Pad and Frame Air Filters

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

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

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

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

with each stage capturing progressively smaller particles inside the filter

such as dust

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

We look forward to delivering our American-made

The permanent frame is constructed of space-age plastics that are resistant to corrosion

Filtering inserts are shipped in an easily stored packet

They are easy to install with custom air filters made to the sizes that you specify