Merv 11 Pleated Air Filter - 8" x 36" x 1" Quantity:12-pack The filtering media consists of

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

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

Produces no ozone or aldehydes

if not you can measure it or check the HVAC unit and the owner‰۪s manual

It is designed to inhibit growth of bacteria

Merv 11 Pleated Air Filter - 8" x 36" 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.