Merv 11 Pleated Air Filter - 19 5/8" x 21 5/8" x 1"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.

Filtering inserts are anti-microbial and are more efficient in capturing particles

the "A+2000" brand Permanent Washable Electrostatic custom air filters are truly quality products

PACK of 6 pads for Pad and Frame Air Filters

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

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than standard fiberglass filters purchased at retail outlets

28X Increased Efficiency

This is designed to fit into 1" Return Air Grilles

Either way

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

Includes one Frame and PACK of 6 pads

Filtering inserts are shipped in an easily stored packet