Merv 11 Pleated Air Filter - 19 1/2" x 21 1/2" x 2" Quantity:12-pack the more efficient a filter

the more efficient a filter is at removing particles

åÊWe look forward to delivering our American-made

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

And there are no metal parts that could lead to corrosion or oxidation within the filter

28X Increased Efficiency

Merv 11 Pleated Air Filter - 19 1/2" x 21 1/2" x 2" 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.