Merv 8 Pleated Air Filter - 27" x 31" x 1" Quantity:12-pack if not you can measure

if not you can measure it or check the HVAC unit and the owner‰۪s manual

åÊWe look forward to delivering our American-made

In general

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

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

Merv 8 Pleated Air Filter - 27" x 31" x 1" Quantity:12-pack if not you can measureAny 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.