Maximum height of the window opening about 45cm.
The temperature of complete opening of about 30 °C (depending on the adjustment and load).
Maximum weight vents not more than 7 kg.
Opening temperature regulated 16 to 25 °C.
Important Notice :
Automatic ventilation of greenhouse can not be used at temperatures above 50 °C(122°F).
Make sure that your greenhouse window opens normally.
Lubricated the threads and the cylinder rod and moving all parts with lubricating oil when assembly also check for lubrication during the whole summer .
At the end of the summer is necessary to dismantle the cylinder in order to avoid breakage and store in dry place.
After next installation, do not forget to lubricate it.