Just router a Rectangular hole and this unit drops into place just like an oversize cable port. These particular units have the added advantage of having an integral set of 2 gang or 3 gang sockets, there's also a couple of options with Cat 6 Data.
There's a number of options available within this range including a choice of depths and some models have a recently developed soft close mechanism, although as yet this isnt' available with the integral sockets.
If you haven't got your own, you would need to buy a mains leads lead to power this unit, and possibly a data lead if you've chosen the data option. We don't supply these as standard because some customers prefer to supply their own.