Merv 13 Pleated Air Filter - 21 1/4" x 24 1/2" x 1" Quantity:12-pack The unit also includes a

The unit also includes a magnetic mounting bracket for optional installation inside air handlers

offers the quickest installation on the Planet

we even have the odd sizes

Water resistant lamp connection

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

Merv 13 Pleated Air Filter - 21 1/4" x 24 1/2" x 1" Quantity:12-pack The unit also includes aAny 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.