Practical Pleated Air Filter (2-Pack) - 21" x 23 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

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

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

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

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so it can provide a lifetime of dependable service

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

such as dust

We can make custom air filters in heights and widths ranking from 6 inches to 36 7/8 inches with increments in 8ths of an inch

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

the A+2000 uses stage loading

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

the A+2000 uses no foam that may clog