Merv 13 Pleated Air Filter - 18" x 21" x 1" Quantity:12-pack we even have the odd

we even have the odd sizes

No holes needed for installation in coil area

Easy Installation and ServiceåÊ

This is designed to fit into 1" Return Air Grilles

You may know them as washable air or even permanent air filters

Merv 13 Pleated Air Filter - 18" x 21" x 1" Quantity:12-pack we even have the oddAny 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.