Merv 13 Pleated Air Filter - 19 3/4" x 21 1/2" x 1" Quantity:12-pack The filtering media consists of

The filtering media consists of two layers of Stainless Steel roll formed baffles

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

28X Increased Efficiency

This is designed to fit into 1" Return Air Grilles

Water resistant lamp connection

Merv 13 Pleated Air Filter - 19 3/4" x 21 1/2" x 1" Quantity:12-pack The filtering media consists ofAny 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.