20" x 34" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:20" x 34" x 4" MERV 8 - Premium Pleated Air Filter Actual Dimensions: 24 1/2" x

Actual Dimensions: 24 1/2" x 31 1/2" x 3/4"

14" x 18" x 1" Permanent Washable Air Filter - 1 Pack

21 1/2" x 23 1/2" x 1" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 23 1/2" x 27 3/4" x 3/4"

20" x 34" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:20" x 34" x 4" MERV 8 - Premium Pleated Air Filter Actual Dimensions: 24 1/2" x20" x 34" x 4" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 19 7 8" x 33 7 8" x 3 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 electrostatic