To install I used a 50mm hole saw and a 40mm plumbing pipe flange. I used a basket to hold all the wires out of the way mounted up in the cupboard.
In terms of the FetchTV box itself. Great! You can record up to 5 channels and there is very little loss from the splitter. Has a 1tb hard drive so you can record about a million hours of TV. No DVDs player tho.
As a side note I found out when I visited a site that had it's own aerial plug that the standard Jayco internal cabling isn't up to much ( that's not news to most). To help a bit I thought that I would shell out for an expensive Belkin cable to the Fetch TV unit. The standard Jayco one outperformed that one which is now in the expensive mistakes bin. I have since upgraded to RG6... Unfortunately not thru the entire system.