The A3 3-Section Acrylic Panel from Clearsonic are made from 1/4" thick acrylic and help reduce drum bleed into microphones (vocal and instrument) for a better sound experience. The A3 is ideal for speaker cabinets. The 3-panel configuration has accordion-style folding for easy storage, setup, and dismantling. In order to ease wiring, cable cut-outs are located between each panel.