clamps

I have 2 sets of clamps to mount UV sterilizers to back of the cabinet. Compatible with: 18W Pentair Smart UV Sterilizer 25W Pentair Smart UV Sterilizer 40W Pentair Smart UV Sterilizer $40 each + $5 shipping

Long shot but what the heck. Any plumbers or plumbing geniuses here? I need something other than the jank shown in the photos to support my return line. I came up with this jank- galvanized split ring hangers, 3/8" galvanized bolt, and stainless steel lock nuts (nylon in them). What I have...