Place the TZ series firewall on a flat surface. Allow unrestricted airflow around the unit, leaving at least one inch (25 mm) clearance on all sides.
Instead of using a rack mount tray to mount your TZ series appliance and power adapter in a standard 19-inch rack, you can mount a DIN bracket to the bottom of your TZ series appliance using the two M3*4mm screws provided and hang it from one of the rails in your rack.