Merv 11 Pleated Air Filter - 29 7/8" x 35 7/8" x 1" Quantity:12-pack In general

In general

This is designed to fit into 1" Return Air Grilles

oxidation and deterioration

with each stage capturing progressively smaller particles inside the filter

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

Merv 11 Pleated Air Filter - 29 7/8" x 35 7/8" x 1" Quantity:12-pack In generalAny 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.