The Speakman Safe-T-Zone STW-SC1 Thermostatic Mixing Valve Cabinet was designed specifically for our STW-370 Thermostatic Mixing Valve. This cabinet provides an ergonomic, aesthetically pleasing holster for your thermostatic mixing valve. A secure lock and key feature protects the valve from dirt and debris as well as potential tampering. The Safe-T-Zone STW-SC1 Cabinet is constructed entirely of stainless steel to provide exceptional quality and durability.