Wall Mounting Hardware for Acoustic Panels

Does anyone have suggestions for suspending absorptive panels from the wall, and also from a slanted ceiling? I am constructing my own panels from Owens Corning 703 (rigid fiberglass) set within wooden frames and covered with cotton cloth. I need to find some good hardware to mount them on the wall. I've heard some mention of velcro, but don't fully trust it unless I were to hot blue the receiving side onto strips of wood and screw the wood into the wall. Has anyone hung panels to recommend some hardware alternatives?

Thanks, Peter S.