12 1/2" x 24 1/2" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:12 1/2" x 24 1/2" x 1" MERV 11 - Pleated Air Filter These Rigid Air Filters provide

These Rigid Air Filters provide efficiencies in 65%

19 1/2" x 35 1/2" x 1" MERV 8 - Premium Pleated Air Filter - 6 Pack

20" x 20" x 12" 85% With Header Rigid Filter

Actual Dimensions: 21 7/8" x 35 7/8" x 3 3/4"

Actual Dimensions: 13 7/8" x 29 7/8" x 1 3/4"

12 1/2" x 24 1/2" x 1" MERV 11 - Ultra Allergen Reducing Pleated Air Filter - 6 Pack MERV 11 - Pleated Air Filter:12 1/2" x 24 1/2" x 1" MERV 11 - Pleated Air Filter These Rigid Air Filters provide12 1 2" x 24 1 2" x 1" MERV 11 Pleated Air Filter 6 Pack Actual Dimensions: 12 1 2" x 24 1 2" 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,