17 1/4" x 21" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:17 1/4" x 21" x 1" MERV 8 - Premium Pleated Air Filter 18" x 30" x 1"

18" x 30" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

Actual Dimensions: 18 5/8" x 25 3/8" x 3/4"

Actual Dimensions: 20 7/8" x 22 7/8" x 1 3/4"

20" x 24" x 6" 65% No Header Rigid Filter - 1 Pack

17 1/4" x 21" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:17 1/4" x 21" x 1" MERV 8 - Premium Pleated Air Filter 18" x 30" x 1"17 1 4" x 21" x 1" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 17 1 4" x 21" 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