Merv 11 Pleated Air Filter - 18" x 18" x 2" Quantity:12-pack It is designed to inhibit

It is designed to inhibit growth of bacteria

They are constructed from 304 Stainless Steel material formed to exact specifications

And there are no metal parts that could lead to corrosion or oxidation within the filter

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

The permanent frame is constructed of space-age plastics that are resistant to corrosion

Merv 11 Pleated Air Filter - 18" x 18" x 2" Quantity:12-pack It is designed to inhibitAny 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.