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Your cart is empty. 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.
No batteries or electrical power needed.
The liquid-filled cylinders expand as temperature increases.
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.
Item Specifications:
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
Package：
1 x Automatic window opener
Customer
Reviewed in the United States on March 13, 2020
Worked fantastic "at first". By srart of second season, not at all. Bummer purchase. No longer avail. So no contact with seller. I feel ripped off.
Dre
Reviewed in the United States on January 12, 2020
This Jack-Store Solar Heat Sensitive Automatic Thermofor Window Opener Greenhouse Autovent Vent Opener worked very well. It opens the window vent automatically whenever the greenhouse gets too warm. Easy enough to install.
hugh watson mcdowell jr.
Reviewed in the United States on May 21, 2018
Works very well, have used this for 6 weeks and have not had any problems.
Two Pilots
Reviewed in the United States on December 29, 2018
One of my units is still forking, however the second failed after only partially working for a few months.
Customer
Reviewed in the United States on December 23, 2018
Used for my 6x8 hf greenhouse it installed easily. Works really well.
Nancy R.
Reviewed in the United States on April 11, 2018
Piece of junk. Doesn’t work. Followed directions and the piston never moved the window. Looking elsewhere.
Nicholas Zigich
Reviewed in the United States on September 6, 2017
Works well, opens and closes everyday. Wish it opened wider. Also does not close with much force, a gravity assisted window would be best.
Phyllis P.
Reviewed in the United States on May 1, 2017
Took a couple of weeks to get here. But it is well represented and arrived in good condition. Would order again should I need this item again.
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