Merv 13 Pleated Air Filter - 21" x 22" x 1" Quantity:12-pack the more efficient a filter

the more efficient a filter is at removing particles

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

PACK of 6 pads for Pad and Frame Air Filters

No holes needed for installation in coil area

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

Merv 13 Pleated Air Filter - 21" x 22" x 1" Quantity:12-pack the more efficient a filterAny 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.