17 1/2" x 35" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:17 1/2" x 35" x 1" MERV 11 - Pleated Air Filter Actual Dimensions: 13 7/8" x

Actual Dimensions: 13 7/8" x 21 7/8" x 3 3/4"

21 3/8" x 23 3/8" x 1" MERV 13 - Pleated Air Filter - 6 Pack

16" x 18" x 1" MERV 4 - Residential Washable Air Filter - 1 Pack

They help capture airborne particles/allergens between 3-10 microns in size and are an ideal upgrade from standard disposable panel filters

18 1/2" x 24" x 1" MERV 11 - Pleated Air Filter - 6 Pack

17 1/2" x 35" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:17 1/2" x 35" x 1" MERV 11 - Pleated Air Filter Actual Dimensions: 13 7/8" x17 1 2" x 35" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 17 1 2" x 35" x 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