Raymarine 435i Owner's Handbook Manual page 25

Chapter 2: Installation 15
7. Screw the studs into the vacant holes at the rear of the unit, hand tight
only.
8. Place the gasket on the unit and slide the unit into the panel cut-out.
9. Secure the unit with the thumb nuts, hand tight only (Figure 2-3 ).
D6265-1
Figure 2-3: RC435 Panel Mounting Arrangement