I’ve been experimenting with moving all my acoustic treatments around in different configurations and locations to see how the sound is affected. I searched for a system that would allow quick and flexible changes. I ended up attaching inch and a half wide Z-clips on the back of all my panels and then long, twelve foot in my case, Z-clip rails to the walls. Now I can relocate panels with great flexibility as I experiment and search for the perfect configuration.
The rails are predrilled at 8" on center so you can always find studs to screw them into. They are rated at 700 lbs. so works for even heavy treatments.