Merv 13 Pleated Air Filter - 36 7/8" x 36 7/8" 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

than standard fiberglass filters purchased at retail outlets

such as dust

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

Either way

Merv 13 Pleated Air Filter - 36 7/8" x 36 7/8" 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.