Just about finished installing a Fan-tastic fan in the bedroom. I had a hard time finding a tan roof caulk to match my Diamond package. Local dealer had none, neither did other RV stores nearby, Dicor does not make a tan, and Forest River told me they couldn't help me because UPS will not ship it. Finally, contacted the roof manufacturer and they sent me two tubes via FedEx. Maybe FR should switch to FedEx?
If you do this, be cautious when removing the leveling caulk around the old vent. It sticks to the roof membrane and you can easily tear that roof material. Took about an hour to get the old one off.
I easily found an un switched 12 volt line to power my new fan and all is hooked up and working as advertised. I did find the inside trim piece that came with the fan was too short, about 1 1/2 inches. A phone call to Fan tastic fans and the proper trim piece is on the way.