Merv 13 Pleated Air Filter - 16 1/2" x 21 1/4" x 1" Quantity:12-pack Finally they are factory made

Finally they are factory made so you don‰۪t have to deal with the hassle of trying to cut and size your custom air filters and they come with a full warranty

28X Increased Efficiency

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

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Merv 13 Pleated Air Filter - 16 1/2" x 21 1/4" x 1" Quantity:12-pack Finally they are factory madeAny 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.