16" x 21" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:16" x 21" x 4" MERV 13 - Pleated Air Filter Actual Dimensions: 23 7/8" x

Actual Dimensions: 23 7/8" x 27 7/8" x 3 3/4"

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

Actual Dimensions: 13" x 30" x 3/4"

patented fiberglass

7 1/2" x 13 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

16" x 21" x 4" MERV 13 - Ultimate Allergen Reducing Pleated Air Filter - 6 Pack MERV 13 - Pleated Air Filter:16" x 21" x 4" MERV 13 - Pleated Air Filter Actual Dimensions: 23 7/8" x16" x 21" x 4" MERV 13 Pleated Air Filter 6 Pack Actual Dimensions: 15 7 8" x 20 7 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