21 1/2" x 23 3/8" x 2" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:21 1/2" x 23 3/8" x 2" MERV 11 - Pleated Air Filter 14" x 18" x 2"

14" x 18" x 2" MERV 11 - Pleated Air Filter - 6 Pack

Actual Dimensions: 8 3/4" x 35 5/8" x 3/4"

16 1/4" x 21 1/2" x 4" MERV 13 - Pleated Air Filter - 6 Pack

30" x 36" x 1" MERV 11 - Pleated Air Filter - 6 Pack

This filter is comparable to the 3M Filtrete Dust & Pollen: Filtrete 2000

21 1/2" x 23 3/8" x 2" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:21 1/2" x 23 3/8" x 2" MERV 11 - Pleated Air Filter 14" x 18" x 2"21 1 2" x 23 3 8" x 2" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 21 1 2" x 23 3 8" x 1 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,