Merv 8 Pleated Air Filter - 11" x 18" x 1" Quantity:12-pack Because we specialize in custom

Because we specialize in custom air filters

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To find the size the old unit should have sizing information printed on it

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

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

Merv 8 Pleated Air Filter - 11" x 18" x 1" Quantity:12-pack Because we specialize in customAny 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.