I had to buy the mounting hardware from Europe and retro fit it to the hardware from my Thule awning that I was replacing, (the Thule had electrical problems from day one and would retract at the most inconvenient times) the mounting bolts were hidden by my finished ceiling . Measure twice drill once, bought a couple of 5/16 bits one for drilling hardened metal and some 4” bolts with nylon lock nuts and washers. Mounted up great took about 5 hours, works flawlessly.