I hope this is in the right forum area. I've seen a system used on here in the build logs (of coarse I can't find it now!) for covering acoustical panels that are flush mounted on walls. Usually used for the top half of a wall where the bottom is drywall. It allows you to change material down the road without ripping the panels out. It is a metal frame that goes around the 703/705 and gets screwed to the studs. I think it has a small channel in it that you can insert the fabric and push it in with a screen door tool.? can someone point me in the direction as to where to purchase these frames?