19 7/8" x 21 1/2" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:19 7/8" x 21 1/2" x 4" MERV 11 - Pleated Air Filter 20" x 20" x 12"

20" x 20" x 12" 85% With Header Rigid Filter - 1 Pack

Actual Dimensions: 20" x 22 1/2" x 3/4"

15 3/4" x 27 5/8" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

8" x 14" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

19 7/8" x 21 1/2" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:19 7/8" x 21 1/2" x 4" MERV 11 - Pleated Air Filter 20" x 20" x 12"19 7 8" x 21 1 2" x 4" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 19 7 8" x 21 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,