Practical Pleated Air Filter (2-Pack) - 21 3/4" x 21 3/4" x 5" Quantity:Default Filtering inserts are shipped in

Filtering inserts are shipped in an easily stored packet

A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter

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

the A+2000 uses stage loading

And there are no metal parts that could lead to corrosion or oxidation within the filter

Practical Pleated Air Filter (2-Pack) - 21 3/4" x 21 3/4" 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