Merv 8 Pleated Air Filter - 21" x 21 3/4" x 1" Quantity:12-pack the A+2000 uses stage loading

the A+2000 uses stage loading

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

To find the size the old unit should have sizing information printed on it

This is designed to fit into 1" Return Air Grilles

No screws need

Merv 8 Pleated Air Filter - 21" x 21 3/4" x 1" Quantity:12-pack the A+2000 uses stage loadingAny 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.