Merv 8 Pleated Air Filter - 21" x 21" x 1" Quantity:12-pack The secret behind the A+2000‰۪s

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

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This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

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

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Merv 8 Pleated Air Filter - 21" x 21" x 1" Quantity:12-pack The secret behind the A+2000‰۪sAny 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.