Merv 11 Pleated Air Filter - 13 1/2" x 19 1/4" 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

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In general

with each stage capturing progressively smaller particles inside the filter

such as dust

oxidation and deterioration

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

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

from the air stream

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

some just refer to them as electrostatic filters

Unlike some permanent custom air filters