Automatic Window Control Mechanism - no power needed - Automatic Window Control Mechanism - no power needed -

Gas-filled. Entirely self-contained (no power needed), the device extends in the heat of the sun and opens up the cold frame. As soon as it becomes cooler, the device closes it up again.

Show All Prices

Your Rating Your Comments (optional)
 

Your review will appear on the website after it has been approved. Thank you for your contribution.