HXGREENHOUSE Expansion Device Replacement for Window Opener
Product Description: Replace your old piston rod with our Standard Expansion Device, to maximize your window opener's performance. It fits most of the openers on the market. Apart from being used in the greenhouse window openers, it is used in a wide variety of applications, such as roof covers, power plants, etc.
The Core Technology: The metal expansion device contains a self-developed wax, which can expand or shrink when temperature changes, so in this way, lead the spring open or close the window.
Main Features: - Automatically open/close the window, work as the greenhouse window openers thermostat - You don't need any electricity in your greenhouse with it, make the window opener environmentally friendly - Made of aluminum, with a long lifetime, durable to use - Suitable for most of the openers on the market