Features: With this item, you can control which side of the "T" receives the hot air, you can also allow one side to get more hot air than the other or not at all (you can close one side totally). With 2 closable open control valves. Initial installation. Additional outlet to an existing system. Effectively separate the flow of hot air from your heater. For For For Propex heater Specification: Product Name: T Branch Outlet Connector. Total Length: 160mm/6.3in Outer Diameter: 75mm(3in) Color: Black Material: ABS Package Contents: 2 x T Branch Outlet Connector Only the above package content, other products are not included. are not included. Note: Light reflection and different displays may cause the color of the item in a little different from the real thing. The measurement allowed error is +/- 1-3 cm.