9 1/4" x 21 3/4" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:9 1/4" x 21 3/4" x 1" MERV 11 - Pleated Air Filter 17" x 20" x 1"

17" x 20" x 1" MERV 13 - Pleated Air Filter - 6 Pack

10" x 20" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

9" x 30" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

17 1/4" x 23 1/2" x 1" MERV 11 - Pleated Air Filter - 6 Pack

to protect occupants from airborne irritants and should be changed every 60-90 days depending on levels of air contaminents

9 1/4" x 21 3/4" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:9 1/4" x 21 3/4" x 1" MERV 11 - Pleated Air Filter 17" x 20" x 1"9 1 4" x 21 3 4" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 9 1 4" x 21 3 4" 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,