20" x 25 1/4" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 27-75w 20" x 40" x 1"

20" x 40" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20 1/2" x 21 1/2" x 1" MERV 11 - Pleated Air Filter - 6 Pack

MERV 6 - Fiberglass Air Filters - Standard Filters

27 3/4" x 31 3/4" x 1" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 16" x 18" x 3/4

20" x 25 1/4" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 27-75w 20" x 40" x 1"20" x 25 1 4" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 20" x 25 1 4" 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