Merv 8 Pleated Air Filter - 21" x 21 3/4" x 1" Quantity:12-pack The SpeedLight uses powerful magnets

The SpeedLight uses powerful magnets to hold the mounting plate in place

This design enables A+2000 custom air filters to maintain performance over the years

the A+2000 uses no foam that may clog

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

Merv 8 Pleated Air Filter - 21" x 21 3/4" x 1" Quantity:12-pack The SpeedLight uses powerful magnetsAny 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.