6.Fasten the back supply to the wall, going through the lower back supply wall.
•These fasteners are to help maintain the location of the Back Supply, and are not intended to hold the weight of the back supply unit.
•The fasteners should not interfere with the removable air diffusers.
•The 31.25 in. (79.375 cm) height is based upon the canopy hood hanging height of 78 in. (198.12 cm)
STEP 3
Fasteners holding the back supply to the wall
31.25 in. Critical Dimension
Hanging the Hood
Before hanging the hood according to the hood installation instructions, please check the following:
1.Make sure the back supply plenum is properly secured, as described in steps 5 and 6.
2.If the ductwork for the back supply plenum will not interfere with the hood installation, it should be connected now.
3.Any filler panels should be attached to the hood before the hood installation.
4.Lift the hood, and position it so the filler panels are resting lightly on the top outside edges of the back supply. The back supply is used to position the hood only. It is not intended to hold any hood weight.
5.Connect the remaining ductwork for the back supply and the hood. It is recommended that caulk be applied at the mating seams and surfaces of the back supply, the hood, and the wall.
Air Diffusers
The air diffusers, located at the bottom of the back supply, will need to be cleaned as often as the application dictates. Inspect periodically to determine the cleaning schedule.
1.To clean the air diffusers, unfasten the screws. Remove the air diffusers from the back supply unit, and wash in the sink or dishwasher.
2.Insert the air diffusers at an angle from the bottom, and rotate so the forms are downward. Rest the diffuser on the internal angles.
3.Refasten with the stainless steel screws.
Removable Air Diffusers 
12 Model GGH2O
®