The S.O.S. Rack is 32 inches deep, 81 inches tall and 76 inches long, with a design that accommodates scuba tanks, oxygen bottles and SCBA tanks. The unit is configurable for specialized bottle shelves and/or flat shelving for gear bags, or for turnout gear and dive gear storage/drying. The rack features four 1,050-pound capacity casters and is constructed of heavy-duty steel tubing with high-strength wire. Departments can store up to 18 low-profile SCBA tanks per vertical section. Groves, McHenry, Ill.