The VE-3x5 backboxes are black powder painted steel, weather resistant boxes designed to be surface mounted to a wall, post, or single gang box.
The VE-3x5 is designed to be used with the E-40 Series entry phones and is also compatible with EWP versions of the E-40 Series entry phones.
Surface mounting the Viking E-40
Mounts to a standard single gang box
Mounts directly to the wall