I have a glu-lam beam running down the length of my living room with wires coming out the middle of it there is a shallow one inch junction box one half inch deep buy 3 1/4 inches in diameter. I can't find any fixture that has a smaller diameter canopy or part that attaches to the electrical box that is under 4 1/2--5" wide so it sticks out on each side of the beam. It really doesn't look very nice has anyone else had this problem?

Yes I have the same issue on a solid beam in my great room. Luckily the beam is 23' off the floor so I learned to live with it. How wide is your beam? I just did a quick search and could not find what I was looking for but you need a box transition plate.

My beam is 3 1/2" wide, what is a box transition plate?
Thanks for you reply.
Larry