Merv 13 Pleated Air Filter - 21 1/2" x 33 1/2" x 1" Quantity:12-pack from the air stream

from the air stream

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Filtering inserts are anti-microbial and are more efficient in capturing particles

degrade and restrict air flow

28X Increased Efficiency

Merv 13 Pleated Air Filter - 21 1/2" x 33 1/2" x 1" Quantity:12-pack from the air streamAny 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.