20" x 21" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:20" x 21" x 1" MERV 11 - Pleated Air Filter 17 1/4" x 21" x

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

Actual Dimensions: 17 1/2" x 35" x 3/4"

16 3/8" x 21 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20" x 25" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack

16 1/2" x 20" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20" x 21" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:20" x 21" x 1" MERV 11 - Pleated Air Filter 17 1/4" x 21" x20" x 21" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 19 7 8" x 20 7 8" 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