Merv 8 Pleated Air Filter - 27" x 31" x 1" Quantity:12-pack some just refer to them

some just refer to them as electrostatic filters

Unlike some permanent custom air filters

One way to overcome this problem is to increase the surface area of the filter media

built to last a lifetime

We look forward to delivering our American-made

Merv 8 Pleated Air Filter - 27" x 31" x 1" Quantity:12-pack some just refer to themAny 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.