21 3/8" x 24 3/8" x 1" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack 22-75w 17 3/4" x 17 3/4"

17 3/4" x 17 3/4" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

12" x 18" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

12" x 36" x 4" MERV 13 - Pleated Air Filter - 6 Pack

Actual Dimensions: 17 3/4" x 17 3/4" x 3/4"

Actual Dimensions: 18" x 25" x 3/4

21 3/8" x 24 3/8" x 1" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack 22-75w 17 3/4" x 17 3/4"21 3 8" x 24 3 8" x 1" MERV 13 Pleated Air Filter 6 Pack Actual Dimensions: 21 3 8" x 24 3 8" x 3 4" Filtration Group's High Capacity MERV 13 air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 13 Efficiency, LEED compliant, High Efficiency in 2" depth, Advanced media incorporating both charged fibers and traditional mechanical principles, 100% recycled paperboard frame, Easy