I assume it's a newer box. If you have the older Genz Box with no holes you'll have to secure it with some small screws.
Any other questions feel free to message or just ask.
Good luck. Take care and tight lines.
I picked one up at the Milwaukee Ice Fishing Show and installed it this afternoon. It seems to work good. I tested it on the floor and and got a digital depth reading that matched the flasher scale. It give an instant depth reading (will not measure less than 3 feet) and also with the push of a button will give you your battery status.