as the temperature changes automatically, maintains the best growing temperature.and prevents your greenhouse from overheating.
perfect for your greenhouse window--opens and closes your greenhouse window.
frameImportant 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 (18inch)
Non Electric, uses solar energy, open or close the greenhouse vents as temperature rises or dropsIncluding fittings & installation manualCan be clamped onto or screwed onto your greenhouse
Do not apply excessive loads by locking or covering windowDo not dismantle the cylinderThe opener CANNOT stop by manual.
