Ideal for your greenhouse window–opens and closes your greenhouse window as the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
Non Electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops
Including fittings & installation manual
Can be clamped onto or screwed onto your greenhouse frame
Important notice:Do not use this opener anywhere the temperature will exceed 50? (122F)
Please ensure your greenhouse window can be opened freely by at least 45cm (18″)
Do not apply excessive loads by locking or covering window
Do not dismantle the cylinder
The opener CANNOT stop by manual
Maximum window opening:45cm
Maximum opening:about 30?, depending on adjustment and load
Maximum opening weight:7kg/15lb
Adjustable open temperature range:15?- 25?/60?-77F
- No batteries or electrical power needed. The liquid-filled cylinders expand as temperature increases.
- Suitable for most greenhouses.
- Simply opens and closes when the temperature changes
- Maximum opening : about 30?, depending on adjustment and load
- Maximum window opening : 45cm
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