This listing is a replacement CYLINDER only, for the full set of auto vent opener you can find it in my shop.
Window opener is also suitable for Orbesen, Gardman & B & Q vents
Non-electrical use of solar energy, open or close the greenhouse openings as the temperature rises or falls
Important Note: Window opener will not work if these openers are used anywhere exceeding the temperature 50 ° (122F).
If you find a product that does not shrink when it is cold or hot, it may be that the product has reached its maximum length during high temperature transport. You only need to put the product in the refrigerator and remove it after a while , The stainless steel part is pressed to the end and can be used.
