20 1/2" x 22" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack 40w Actual Dimensions: 13 7/8" x

Actual Dimensions: 13 7/8" x 23 7/8" x 1 3/4"

These Rigid Air Filters provide efficiencies in 65%

16 1/8" x 21" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20" x 24" x 12" 65% With Header Rigid Filter

17" x 27" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20 1/2" x 22" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack 40w Actual Dimensions: 13 7/8" x20 1 2" x 22" x 1" MERV 8 Premium Pleated Air Filter 6 Pack Actual Dimensions: 20 1 2" x 22" 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 electrostatic