Merv 11 Pleated Air Filter - 19 3/4" x 24 7/8" x 2"Any 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.

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than standard fiberglass filters purchased at retail outlets

In general

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

the greater it's resistance to airflow

This is designed to fit into 1" Return Air Grilles

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

Includes one Frame and PACK of 6 pads

The permanent frame is constructed of space-age plastics that are resistant to corrosion

One way to overcome this problem is to increase the surface area of the filter media

Available in packs of 4

Instead of face loading (particles captured on the outer surface of the filter)