Merv 11 Pleated Air Filter - 16" x 19 1/4" x 1" Quantity:12-pack This is designed to fit

This is designed to fit into 1" Return Air Grilles

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

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

You never have to hassle with disposable filters that will end up in a landfill again

To find the size the old unit should have sizing information printed on it

Merv 11 Pleated Air Filter - 16" x 19 1/4" 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.