Instructions weren’t complete
I purchased non pre-drilled rail. I had solid backing so could drill holes anywhere. I used all of the lags and bushings supplies but once installed the soft close hardware wouldn’t work. The bolts were closer than required for hardware to work. Nothing in the instructions mentioned anything about minimum bolt spacing (they admitted that). Company did offer to replace bar or refund soft-close hardware but I would have had to repair and repaint holes/wall. I chose not to use soft-close hardware. Could have been avoided with better instructions.