$50 · Professional Studio Acoustic Panels (home made)

I built 6 high-performance acoustic panels for my studio. I'm selling them because I no longer have the studio. They are filled with Rockwool Safe'n'Sound insulation and work wonderfully at deadening echoes. 4 @ 4ftx2ft (6" thick) $50 each 2 @ 2ftx2ft (3.5" thick) $25 each $200 for all of them ($50 discount) I mounted them to the wall and ceiling using steel pipe fittings, but there are many other ways you could achieve this.