Mounting two PREMIER units in the UNITE PREMIER:
Each PREMIER unit is fixed with two screws through the bottom of the unit.
Then mount the small panel to fill out the small gap between the units.
When mounting one PREMIER unit:
Place the unit in the middle of the UNITE PREMIER and mount it with two screws. Then mount the two side panels to the left and right of the unit.
The other parts are only used when mounting our red units in the UNITE PREMIER.