Merv 8 Pleated Air Filter - 21 1/2" x 24 1/4" x 1" Quantity:12-pack The permanent frame is constructed

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

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

from the air stream

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

Merv 8 Pleated Air Filter - 21 1/2" x 24 1/4" x 1" Quantity:12-pack The permanent frame is constructedAny 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.