Merv 11 Pleated Air Filter - 18" x 32" x 1" Quantity:12-pack Unlike some permanent custom air

Unlike some permanent custom air filters

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

Filtering inserts are anti-microbial and are more efficient in capturing particles

some just refer to them as electrostatic filters

You may know them as washable air or even permanent air filters

Merv 11 Pleated Air Filter - 18" x 32" x 1" Quantity:12-pack Unlike some permanent custom airAny Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop, and long service life which reduces HVAC equipment maintenance and energy costs. 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.