19 7/8" x 19 7/8" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:19 7/8" x 19 7/8" x 1" MERV 11 - Pleated Air Filter 21 1/4" x 23 1/4"

21 1/4" x 23 1/4" x 1" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 15 7/8" x 17 7/8" x 1 3/4"

20" x 21" x 1" Permanent Washable Air Filter - 1 Pack

18" x 20" x 1" MERV 11 - Pleated Air Filter - 6 Pack

19 7/8" x 19 7/8" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:19 7/8" x 19 7/8" x 1" MERV 11 - Pleated Air Filter 21 1/4" x 23 1/4"19 7 8" x 19 7 8" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 19 7 8" x 19 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,