Practical Pleated Air Filter (2-Pack) - 18" x 18" x 5" Quantity:Default and long service life which

and long service life which reduces HVAC equipment maintenance and energy costs

built to last a lifetime

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

28X Increased Efficiency

In general

Practical Pleated Air Filter (2-Pack) - 18" x 18" x 5" Quantity:Default and long service life whichYes, 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