I'm going on with my project to bring a 20amp electric into the back yard for a few outdoor spotlights and to power my post mount 2 way TSI cluster. I haven't decided which controller to use yet but the small TSI and the CH PCN100 don't look easy to mount to the side of the 4.5" pole. Both of those cabinets have a hole on the top and bottom with 4 screw holes around the big holes. I have a photo to show what I'm talking about:


What parts would I need to mount either cabinet to the 4.5" pole? I really would hate to drill new holes in the back of the cabinets but I was thinking of the band clamp method which is probably how my eagle cabinet was mounted as it has holes on the back at the top and bottom:

any suggestions or imput would help me to decide which way to go and I also will need to find the parts I will need. thanks for looking

Rich T.