Feature(may vary by option.)

●✔️【Important parameters】Lifting force: max. 7 kg/15 lbs, lifting height: max. 45 cm, temperature range: 15° - 25°/60°-77F, maximum opening approx. 30°, depending on the setting and load.
●✔️【Premium Material】The automatic window opener is made of high-quality material, which is very suitable for long-term use. High quality material makes it stronger, safer and more durable.
●✔️【Optimal ventilation】As the temperature changes automatically, the best growth temperature is maintained and your greenhouse prevents overheating.
●✔️【No electricity required】Uses solar energy, opens or closes the ventilation slots of the greenhouse when the temperature rises or falls. Do not disassemble the cylinder. The opener cannot be stopped manually.
●✔️【Easy to use】It is easy to use, can be clamped or screwed onto your greenhouse frame. Please make sure that your greenhouse window can be freely opened by at least 45 cm (18 inches)

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Description

Specifications:
Maximum window opening: 45 cm.
Maximum opening approx. 30°.
Depending on the setting and load. Maximum opening weight: 7 kg/15 lb.
Adjustable open temperature range: 15°-25°/60°-77F.
Size: 38 x 9.5 x 9.5 cm/14.96 x 3.74 x 3.74 inches (approx.)

Package includes:
1 x automatic window opener.

Note:
Due to the upgrade of this item, the 11th shown in the manual is Part not included. Please take the real one as standard.