Merv 8 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack This is a 5" MERV

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

28X Increased Efficiency

such as dust

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

You may know them as washable air or even permanent air filters

Merv 8 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack This is a 5" MERVAny 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.