The weight shouldn't be an issue. These are the heavy duty brackets and they are stout. With that said, I am expecting the overall weight to be roughly 250lbs. That's about 84lbs per bracket. The center and right bracket are mounted directly to studs with 3" screws and the left is mounted to 1/2" sheetrock with 3 molly anchors. Even if it was only 3/8" sheetrock and I was using the smallest molly bolts at 1/8" they still have a tension capacity of 80lbs and a shear load of 110lbs each. I believe the sheetrock here is at least 1/2" so I could double those numbers. Most of the load is going to be shear forces.
Over time science has shown that the simplest answers are usually the correct ones.......
Last edited by thercman; 02-17-2017 at 09:49 PM.