Warm air vent 60mm
It is important to plan the proper routing of the duct and the locations of the air registers. It is good to locate the heater as near as possible to the area being heated. Avoid the use of sharp bends in the ducting and keep overall bends to a minimum.
Cut a ø 67 mm hole in the bulkhead or wall. Screw the body of the register to the bulkhead with 3 screws. Connect the warm air duct to the register and reinstall the grill cover.