Hi Joe,
I can tell you the AC unit for our Globe Trotter must have weighed around
100 pounds or at least it seemed that much when I took it off by myself.
You can imagine I was standing astraddle of the thing lifting up on it while
balancing on some plywood that was padded by carpet on the roof of the
trailer. The unit was well adhered to the roof with vulcum sealant. Yours
sounds like a newer model.
Happy trails, GAS