21 1/2" x 23 5/16" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 15-75l 16 1/2" x 21 5/8"

16 1/2" x 21 5/8" x 2" MERV 13 - Pleated Air Filter - 6 Pack

20" x 20" x 1" MERV 13 - Pleated Air Filter - 6 Pack

16" x 18" x 1" MERV 11 - Pleated Air Filter - 6 Pack

Instead of face loading (particles captured on the outer surface of the filter) the filter uses stage loading

Actual Dimensions: 15 7/8" x 21 7/8" x 3/4"

21 1/2" x 23 5/16" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 15-75l 16 1/2" x 21 5/8"21 1 2" x 23 5 16" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 5 16" 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,