Merv 11 Pleated Air Filter - 7 7/8" x 15 1/2" x 1" Quantity:12-pack A higher MERV rating means

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

and the greater the pressure drop it creates

built to last a lifetime

UL/ULC listed

This is designed to fit into 1" Return Air Grilles

Merv 11 Pleated Air Filter - 7 7/8" x 15 1/2" x 1" Quantity:12-pack A higher MERV rating meansAny 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.