Practical Pleated Air Filter (2-Pack) - 20" x 30" x 5" Quantity:Default Filtering inserts are shipped in

Filtering inserts are shipped in an easily stored packet

these can be purchased in any conceivable size

PACK of 6 pads for Pad and Frame Air Filters

In general

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

Practical Pleated Air Filter (2-Pack) - 20" x 30" x 5" Quantity:Default Filtering inserts are shipped inYes, 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