Merv 11 Pleated Air Filter - 17 1/4" x 20 3/4" x 1" Quantity:12-pack This is designed to fit

This is designed to fit into 1" Return Air Grilles

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

Produces no ozone or aldehydes

is an easy

we even have the odd sizes

Merv 11 Pleated Air Filter - 17 1/4" x 20 3/4" x 1" Quantity:12-pack This is designed to fitAny 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.