Features: - Non-electric, uses solar energy, open or close the greenhouse vents as temperature changes - Can be clamped onto or screwed onto your greenhouse frame - Maximum height of the window opening about 45cm - The temperature of complete opening is about 30Deg.C - Maximum weight vent 7Kg - Opening temperature regulated 16 - 25Deg.C Note: don't use it anywhere the temperature exceeds 50Deg.C ( 122Deg.F ) Package Contents: 1 x Automatic Greenhouse Window Vent Opener 1 x Nut, 4 x Screw 1 x Bending Metal Wire 1 x English User Manual
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