Practical Pleated Air Filter (2-Pack) - 20 1/2" x 20 1/2" x 5" Quantity:Default built to last a lifetime

built to last a lifetime

such as dust

No holes needed for installation in coil area

and the greater the pressure drop it creates

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Practical Pleated Air Filter (2-Pack) - 20 1/2" x 20 1/2" x 5" Quantity:Default built to last a lifetimeYes, 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