Merv 13 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack And there are no metal

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

than standard fiberglass filters purchased at retail outlets

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

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

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

Merv 13 Pleated Air Filter - 21 1/2" x 23 1/2" x 1" Quantity:12-pack And there are no metalAny 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.