18" x 30" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:18" x 30" x 4" MERV 11 - Pleated Air Filter 20" x 20" x 1"

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

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

19 3/8" x 19 3/8" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

12" x 36" x 2" MERV 13 - Pleated Air Filter - 6 Pack

16 1/4" x 21 1/4" x 1" MERV 13 - Pleated Air Filter - 6 Pack

18" x 30" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:18" x 30" x 4" MERV 11 - Pleated Air Filter 20" x 20" x 1"18" x 30" x 4" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 17 7 8" x 29 7 8" x 3 3 4" Filtration Group's High Capacity MERV 11 air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 11 efficiency, UL Classified, LEED point certification, 100% recycled paperboard frame, low resistance to air flow minimizes energy costs, 100% synthetic media is moisture resistant, valuable