21" x 21" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 21-25l 16" x 25" x 1"

16" x 25" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

Actual Dimensions: 13 7/8" x 13 7/8" x 3 3/4"

Easy to install - installs like any disposable filter

Actual Dimensions: 14" x 22" x 3/4

21" x 21" x 4" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack 21-25l 16" x 25" x 1"21" x 21" x 4" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 20 7 8" x 20 7 8" x 3 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, valuable