Most flat panels are now bonded to the roof of a caravan or motorhome. Dealers are reluctant to allow any extra money for them on part exchange, yet do not seem keen to see them removed with the potential for roof damage or subsequent water ingress.
The Phenix, although, on average FIVE times more efficient than a conventional flat panel is very expensive, so you would want to be assured that you could remove it and retain the capital cost should you sell the motorhome.
Phenix is fitted to the roof on two bonded sleds, which unbolt and allow the Phenix to be removed, only requiring a replacement set of sleds which currently cost about £60 (Oct 09)