21 1/4" x 21 1/4" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:21 1/4" x 21 1/4" x 1" MERV 8 - Premium Pleated Air Filter 17 1/2" x 17 1/2"

17 1/2" x 17 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

Actual Dimensions: 11 1/4" x 23" x 3/4"

Actual Dimensions: 12" x 25" x 3/4"

21" x 23 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

21 1/4" x 21 1/4" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:21 1/4" x 21 1/4" x 1" MERV 8 - Premium Pleated Air Filter 17 1/2" x 17 1/2"21 1 4" x 21 1 4" x 1" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 21 1 4" x 21 1 4" x 3 4" Filtration Group's pleated air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 8 efficiency, UL Classified, LEED point certification, 100% recycled paperboard frame, low resistance to air flow minimizes energy costs, 100% synthetic media is moisture resistant, no