It was actually an existing fox fan, but I tossed the rusty, bet up box part and just used the inner fan part and welded up a a new frame for it from 1" square tube. The pivoting frame is 2" sch. 40 pipe; with short stubs of sch. 80 on the pivots, since 1 1/2" pipe fits inside 2" sch. 80 (usually). I wanted to get it hung to see if it would even work, as far as the frame supporting the weight and pivoting, before I do the details such as safety screens, paint, etc. I can stand on the frame with my 200 lb. fat *** with no problem. Thanks to Tom Staude for the round punchouts I made my flanges from, and my buddy Louie for donating the pipe.