The IWB-10 is a sealed pre-construction back box, pre-wired with external terminals, for the IWS-10 subwoofer. Having an internal volume of 24 litres, the IWB-10 is designed to fit between standard 14” stud spacing and comes supplied with adjustable steel fixing brackets. While providing the ideal environment for the driver, the IWB-10 will also reduce the radiation of sound to adjacent rooms.