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Old 09-05-2020, 07:44 AM
  #2  
ajgraz
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Join Date: Jan 2019
Location: San Diego, CA / Atlanta, GA
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I went out and measured mine, with the collar nut engaged 4 full turns, it would mount in up to 1-1/2” thickness.

If I had to use adhesive, I’d use 4200. But I think you’d have to adhere on top rather than from behind. Without the collar, there’d be no mating surface in the rear.