21 1/2" x 23 3/8" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:21 1/2" x 23 3/8" x 4" MERV 13 - Pleated Air Filter 24" x 30" x 1"

24" x 30" x 1" Permanent Washable Air Filter - 1 Pack

18" x 22" x 2" MERV 8 - Premium Pleated Air Filter - 6 Pack

22 1/2" x 24 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

Easy to maintain - no need to buy oil sprays or adhesives to enhance filter effectiveness

Actual Dimensions: 15 1/2" x 30" x 3/4"

21 1/2" x 23 3/8" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:21 1/2" x 23 3/8" x 4" MERV 13 - Pleated Air Filter 24" x 30" x 1"21 1 2" x 23 3 8" x 4" MERV 13 Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 3 8" 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