Boss TGS11000 Tailgate Spreader 11 CuFt. The TGS Spreader series from BOSS is the easiest way to arm yourself against snow and ice. BOSS tailgate-mounted spreaders attach easily and disperse de-icing materials quickly and efficiently to make your job as smooth and steady as possible. With 11 cubic feet of material capacity, the BOSS TGS 1100 will give you maximum efficiency with a minimum size. Because when it's on you to KEEP 'EM OPEN, BOSS is here to BACK YOU UP.