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13" x 22" x 1" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack 27l 27 3/4" x 29 1/2"13" x 22" x 1" MERV 13 Pleated Air Filter 6 Pack Actual Dimensions: 13" x 22" x 3 4" Filtration Group's High Capacity MERV 13 air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 13 Efficiency, LEED compliant, High Efficiency in 2" depth, Advanced media incorporating both charged fibers and traditional mechanical principles, 100% recycled paperboard frame, Easy installation