Merv 11 Pleated Air Filter - 17 1/2" x 21 1/2" 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.

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

please click HERE to read detailed brochure (Adobe Reader PDF file)

Some of the other benefits of A+2000 custom air filters include the following

You never have to hassle with disposable filters that will end up in a landfill again

28X Increased Efficiency

This is designed to fit into 1" Return Air Grilles

allowing the grease to drain into through below

You may know them as washable air or even permanent air filters

Water resistant lamp connection

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

Filtering inserts are shipped in an easily stored packet

Available in packs of 4