17 1/2" x 21" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 21-25l 18" x 22" x 2"

18" x 22" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack

16" x 27" x 1" MERV 11 - Pleated Air Filter - 6 Pack

Easy to maintain - no need to buy oil sprays or adhesives to enhance filter effectiveness

14" x 22" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

8" x 30" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

17 1/2" x 21" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 21-25l 18" x 22" x 2"17 1 2" x 21" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 17 1 2" x 21" x 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