21 1/2" x 23 3/8" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack No Rating 21" x 21" x 4"

21" x 21" x 4" MERV 11 - Pleated Air Filter - 6 Pack

18" x 25" x 2" MERV 4 - Residential Washable Air Filter - 1 Pack

This filter is constructed using a MERV 6

20" x 24" x 12" 65% With Header Rigid Filter

21 1/2" x 23 3/8" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack No Rating 21" x 21" x 4"21 1 2" x 23 3 8" x 2" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 3 8" x 1 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