Merv 13 Pleated Air Filter - 15 1/2" x 21 1/2" x 1" Quantity:12-pack and the greater the pressure

and the greater the pressure drop it creates

The SpeedLight䋢 Jr

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

Easy Installation and ServiceåÊ

This is designed to fit into 1" Return Air Grilles

Merv 13 Pleated Air Filter - 15 1/2" x 21 1/2" x 1" Quantity:12-pack and the greater the pressureAny 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.