Merv 13 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack In general

In general

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

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

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

Merv 13 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack In generalAny 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.