Top outlet size - 3/4" BSP (25mm) for shower column, bottom outlet size: 1/2" BSP (21mm) for shower hose. Temperature and flow are individually controlled, Note: Your home needs hot and cold water circuits. High-grade high-quality brass, durable chrome finish, anti-scaling thermostatic control. The cold water is cut off automatically to prevent scalding. The hot water pipe is installed on the left side and the cold water pipe is installed on the right side. Safe and Comfortable - Water temperature range: 20-50°C, safety button temperature: 38°C. So you can enjoy a comfortable shower on cold winter days without worrying about sudden cold or hot water. product description detail Width: 265mm. Valve diameter: 35mm. Shower hose not included. 1 brass thermostatic shower valve compatible Low Pressure Gravity Feeding System Pumped Gravity System (High Pressure) High pressure system without exhaust port Combined boiler high pressure notes Install hot water pipes on the left and cold water