Practical Pleated Air Filter (2-Pack) - 19 1/2" x 19 1/2" x 5" Quantity:Default To find the size the

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

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

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

the A+2000 uses stage loading

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

Practical Pleated Air Filter (2-Pack) - 19 1/2" x 19 1/2" x 5" Quantity:Default To find the size theYes, 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