My roof mount air conditioner installed by the dealer after my purchase also included two metal support pieces on the ceiling side of the roof on each side of the air conditioner to give the roof more support. Similar to these google photos of the POPUP interior ceiling. The fiberglass type roof of the STARCRAFT has a membrane on top, then an area of foam with the 1/4-inch ceiling panel on the bottom. There are small wood studs running across the roof between the roof membrane and the interior ceiling panel at various points. They beefed the sides of 14 x 14 - hole with wood supports.
My air conditioner is the RVP RV PRODUCTS 8333D Series MACH 3 PLUS 13,500 BTU model.
![](http://www.gillettesinterstaterv.com/gillettesinterstaterv/productphotos/2009%20FLEETWOOD%20CHEYENNE%20(7).JPG)
![](http://i260.photobucket.com/albums/ii27/AZbirddog/MODS/ACbrace-1.jpg)
My 120VAC runs from the air conditioner unit like shown in the google photo but goes to the wall and down behind the valance curtain. Then routes to the rear of the roof and drops down along the zip up window flaps and plugs into a 20AMP 120VAC installed receptacle which is on its own 20AMP circuit breaker in the 120VAC Distribution Panel. I have to plug this cord in to use the air conditioner after the roof has been raised. This 13,500 BTU model added alot of weight to the roof and my electric motor creaks and makes noises as it goes up but has worked great since the 2008 install.
My 2KW Generator is too small to run this air conditioner so it only get used when we are plugged into a 30AMP shore power pedestal. Most of our camping is off the power grid so it doesn't get used all that much by us.
Roy Ken