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Automatic Roof Vent Opener, Single Spring Solar Vent Roof Opener Replacement Cylinder, Agricultural Greenhouse Window Lifter for Hothouse Cold Frame Gardening Tools No Power Needed

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$20.46

$ 10 .99 $10.99

In Stock
  • 【PREMIUM QUALITY】The window opener is made of high quality aluminum alloy. and in damp environments service life. The paint spraying aluminum frame looks more lustrous, and -proof.
  • 【AUTOMATIC ADJUSTMENT】The automatically adjusted opening temperature range is 20°C to 25°C/68° F - 77° F. As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating. Do not use this opener cylinder anywhere the temperature will exceed 50° (122F).Do not dismantle the cylinder.
  • 【APPLICATION】Maximum window opening approximately 45cm/18'', depending on adjustment and load. Window roof vent opener Suitable for greenhouse window up to 7kg (if more than 7kg, we recommend you to use two window opener).
  • 【EASY TO INSTALL】Equipped with screws, can be installed directly with clamps(not included) or screws, very simple and convenient. As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
  • 【ENVIRONMENTAL FRIENDLY】Non electric, uses solar energy,open or close the greenhouse window as temperature rises or drops. This solar heat sensitive auto vent opener can up to 15 lbs. The cylinder closes well before deep freezing and opens again without problem.


Feature:
1. Made of quality material, and convenient to use.
2. As the temperature changes automatically, maintains the best growing temperature and prevents your greenhouse from overheating.
3. Non-electric, uses solar energy, open or close the greenhouse vents as temperature rises or drops.
4. for your greenhouse window.
5. This products need to be refrigerated before use it.
Specification:
Features:
Made of quality material, and convenient to use.
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.
for your greenhouse window.
This products need to be refrigerated before use it.
Specifications:
Item Type: Greenhouse Winder Opener Cylinder
Temperature range 15°- 25°/60°-77F
Weight: Approx. 107g
Package:
1 x Greenhouse Winder Opener Cylinder