Merv 13 Pleated Air Filter - 17 3/8" x 19 1/2" x 1" Quantity:12-pack The permanent frame is constructed

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

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

oxidation and deterioration

Available in packs of 4

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

Merv 13 Pleated Air Filter - 17 3/8" x 19 1/2" x 1" Quantity:12-pack The permanent frame is constructedAny 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.