B-Stock, Clearsonic A2436x3 Panel, 3-section Panel provide acoustic separation between instruments on stage or in the studio. Panel systems feature full-length hinge, cable cut-outs, and a design that allows systems to fold "accordion style" for portability and ease of setup. For maximum isolation without sacrificing visibility. The A2436 panels are commonly used on speaker cabinets.Everything from a small combo amp to a Marshall half-stack will fit in an A3 enclosure. ClearSonic Panels are made of 1/4" thick acrylic. One panel is 6,35 mm/1/4" thick, 915 mm/3' high and 600 mm/2' wide., B-Stock with full warranty, may have slight traces of use