The Haws 9205.SUR Stainless Steel Thermostatic Mixing Valve Cabinet for 9201/9202 is constructed of Type 304, 18-gauge stainless steel with a No. 4 finish. It is surface-mounted and used with models 9201 and 9202. The cabinet has a clear window to view mixing valves, and includes a lock with two piano-type keys, hinged on the left side.