Automatic Louvre Vent Opener

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This unit, designed for automatic louvre control, will fit almost all greenhouses. It  fits within the frame size of the louver,  allowing the louvre to be positioned, virtually anywhere in the greenhouse, including just under the eaves. The release catch allows manual opening and closing of the louver,  irrespective of greenhouse temperature. It has an attractive black powder coated body and is corrosion resistant throughout. Opening temperature range adjustable between 15° and 25°C (59° and 77°F)