Merv 13 Pleated Air Filter - 6" x 18 1/2" x 1" Quantity:12-pack Some of the other benefits

Some of the other benefits of A+2000 custom air filters include the following

This is designed to fit into 1" Return Air Grilles

In general

Includes one Frame and PACK of 6 pads

some just refer to them as electrostatic filters

Merv 13 Pleated Air Filter - 6" x 18 1/2" x 1" Quantity:12-pack Some of the other benefitsAny 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.