Merv 11 Pleated Air Filter - 29 1/4" x 31 5/8" x 2" Quantity:12-pack The "Practical Pleat" media is

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

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

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

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

installation and service is simple

Merv 11 Pleated Air Filter - 29 1/4" x 31 5/8" x 2" Quantity:12-pack The "Practical Pleat" media isAny 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.