17 1/2" x 35 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:17 1/2" x 35 1/2" x 1" MERV 8 - Premium Pleated Air Filter They can capture airborne particles/allergens

They can capture airborne particles/allergens between 1 and 10 microns

19" x 23" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

Actual Dimensions: 16 1/2" x 21 1/4" x 3/4"

Actual Dimensions: 29" x 30" x 3/4"

Actual Dimensions: 16" x 36" x 1 3/4

17 1/2" x 35 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack MERV 8 -Pleated Air Filter:17 1/2" x 35 1/2" x 1" MERV 8 - Premium Pleated Air Filter They can capture airborne particles/allergens17 1 2" x 35 1 2" x 1" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 17 1 2" x 35 1 2" x 3 4" Filtration Group's pleated air filter is made of 100% Synthetic Media which will not promote mold or bacteria growth and has the following features: MERV 8 efficiency, UL Classified, LEED point certification, 100% recycled paperboard frame, low resistance to air flow minimizes energy costs, 100% synthetic media is moisture resistant, no