Chief CMSUNV1 Mounting Shelf for A/V Equipment - SilverEnhance your CMS491 1' x 2' plenum rated storage box with the CMSUNV1 mounting shelf, a purpose built addition that brings organized, accessible space to your A V setup. Ideal for classrooms, conference rooms, studios, and control rooms, this shelf maximizes efficiency by giving you a dependable mounting surface for media players, encoders, small processors, and other compact AV components. Its sleek silver finish blends seamlessly with the Chief