Features: Experience temperature controlled with the Normally 24V Thermals Electric Valves, designs for efficients underfloor heating systems. This electric actuator features hat that rises when the Valves opens and drop when it closes, ensuring operations and easy monitoring. For homeowner and professional seek energy efficients solution for floor heating manifolds systems. For use in residential and commercial space, this Thermals electric Valves integrates into Radiants manifolds and hot water radiators. Enhances your heating systems performances with this flame retardant nylon actuator, engineered to provide stable operations and improve indoor comfort. Specifications: Component: Flame Retardant Nylon Type: Open, Closed(Optional) Size: Height 5.0cm/1.97inch Package Includes: 1pc Thermals Electric Valves note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.