21 1/2" x 23 1/2" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:21 1/2" x 23 1/2" x 4" MERV 11 - Pleated Air Filter 11 1/2" x 29 1/4"

11 1/2" x 29 1/4" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

Actual Dimensions: 13 3/4" x 23 1/2" x 3/4"

12 1/2" x 24 1/2" x 4" MERV 13 - Pleated Air Filter - 6 Pack

13" x 21 1/2" x 2" MERV 11 - Pleated Air Filter - 6 Pack

16" x 36" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack

21 1/2" x 23 1/2" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:21 1/2" x 23 1/2" x 4" MERV 11 - Pleated Air Filter 11 1/2" x 29 1/4"21 1 2" x 23 1 2" x 4" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 1 2" 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,