12 1/4" x 15" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack 17-375l 20" x 30" x 1"

20" x 30" x 1" Permanent Washable Air Filter - 1 Pack

Actual Dimensions: 12" x 18" x 3/4

Actual Dimensions: 13 1/2" x 16" x 3/4"

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

12 1/4" x 15" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack 17-375l 20" x 30" x 1"12 1 4" x 15" x 1" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 12 1 4" x 15" 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 electrostatic