21 1/2" x 23 3/8" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:21 1/2" x 23 3/8" x 4" MERV 8 - Premium Pleated Air Filter 20" x 20" x 12"

20" x 20" x 12" 65% No Header Rigid Filter

19 7/8" x 21 1/2" x 1" MERV 6 - Fiberglass Air Filter - 6 Pack

21 1/2" x 23 1/2" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

24" x 24" x 6" 85% No Header Rigid Filter - 1 Pack

24" x 45" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

21 1/2" x 23 3/8" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:21 1/2" x 23 3/8" x 4" MERV 8 - Premium Pleated Air Filter 20" x 20" x 12"21 1 2" x 23 3 8" x 4" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 3 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