SkuttleĀ® Make-up and Combustion Air Diffuser, 6 in, 9-1/2 in Length, 9-1/2 in Width, 19-1/4 in Height
The Skuttle Make-up and Combustion Air Diffuser (Model D-28-6) is designed to supply combustion air to fuel-burning appliances that have inadequate combustible air sources.