20" x 21 1/2" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:20" x 21 1/2" x 4" MERV 13 - Pleated Air Filter 10" x 14" x 4"

10" x 14" x 4" MERV 8 - Premium Pleated Air Filter - 6 Pack

Actual Dimensions: 17 1/2" x 27" x 3/4"

Actual Dimensions: 13" x 22" x 3/4"

16" x 24" x 2" Permanent Washable Air Filter - 1 Pack

20" x 21 1/2" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:20" x 21 1/2" x 4" MERV 13 - Pleated Air Filter 10" x 14" x 4"20" x 21 1 2" x 4" MERV 13 Pleated Air Filter 6 Pack Actual Dimensions: 19 7 8" x 21 1 2" x 3 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