Merv 11 Pleated Air Filter - 20" x 23 5/8" x 1" Quantity:12-pack the "A+2000" brand Permanent Washable

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

The filtering media consists of two layers of Stainless Steel roll formed baffles

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

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The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

Merv 11 Pleated Air Filter - 20" x 23 5/8" x 1" Quantity:12-pack the "A+2000" brand Permanent WashableAny 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.