Automatic opener for greenhouse. The opener opens and closes the window automatically, without electricity or batteries. It operates with the thermal expansion of the substance found in the cylinder. Maximum window opening up to 45 cm. Lifting capacity 7 kg.
When correctly installed and used, a 2-year warranty is issued.
Lubricate the moving parts of the automatic opener with oil after installation, a couple of times each spring and every summer. The cylinder threads must be lubricated with grease or vaseline.
Remove cylinder for the winter and store it in a dry place.