BOSE UB-20B Wall/Ceiling Bracket Speaker Mount Black New Factory Sealed A1 The BOSE UB-20B Wall/Ceiling Bracket Speaker Mount in black is a new, factory-sealed accessory designed specifically for Bose speakers. This fixed height stand offers a secure and convenient way to mount your speakers on the wall or ceiling, providing a sleek and hidden integration into your home audio setup. With a one-size design and compatibility with the BOSE UB-20B model, this speaker mount is a practical and stylish addition to enhance your audio experience.