Clearsonic SC2233 Sorber Cloud Panel - Dark Gray1. 6 inch thick SORBER sound absorption baffles outperform the industry standard 1 inch thick baffles by at least 50%, and are especially efficient at absorbing lower frequencies. SORBER baffles feature a compressed fiberglass core that is encased in a tough Velcro receptive charcoal gray cloth and are available in free standing, Velcro tackable or booth lid system models. SORBER also can be attached to walls and hung from the ceiling to dramatically