Special Nonexistent Furniture
Part #: JU124
SKU #: JU1055

Juliana Greenhouse Univent Window Opener


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List Price:  $67.54

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Arrives for Christmas to Woodbridge, NJ 02108 (Change)


Product Details
Product Q&A
Shipping & Returns
With the Juliana automatic window openers you can be sure of an even temperature in your greenhouse day and night. To be continuously controlled from 62-73º F (17-23º C).


  • Material: Polycarbonate greenhouses
  • Spring loaded
  • Allows thermostatic control of roof vents
  • Note: Take care to remove the cylinder during periods with frost as the openers may try to open the windows when the sun warms up the cylinders. If the windows are frozen, this may cause the cylinders to burst due to their demand for getting rid of their surplus energy.

Weights & Dimensions

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Product Type: Window & Door AccessoriesCountry of Manufacture: Denmark

Questions & Answers

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“Is there something in place that will prevent this from slamming shut?” asked by Melissa

"Hello Melissa, yes, this has springs so that it won't slam shut." Will E from Wayfair

“Can you please help me better understand how the univent window opener works?” asked by Jules

"Hi Jules, this uninvent window opener is heat-sensitive. When it warms up, it opens and when it gets cold it will close." Will E from Wayfair

“Not sure if this what I am in need of. I think I want something that will open at least a foot and want to know if this will fit the bill?” asked by Anthony

"Hello Anthony, This will open up to 18 inches." Will E from Wayfair

Shipping Info

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Return Policy

We want you to love it. If you don't, you may return your purchase within 30 days of delivery. All you need to do is visit our Self-Service Return Center for instructions. Return credits are issued within 24 hours once the item is received and inspected. Please note that shipping charges are non-refundable. The cost of return shipping will be deducted from your refund.

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Customer Reviews

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Average Overall Rating:
(based on 6 reviews)

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Univent Window Opener

 from Everett WA– Verified Buyer

Auto vent works smoothly. No fussing around.

Was this helpful? Yes / No

I would buy this product again

 from portland, or– Verified Buyer

great opener, no problems whatsoever

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Recommend it.

 from New Hampshire– Verified Buyer

It easily disconnects to open fully.

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The vent works great.

 from North Jersey– Verified Buyer

This is used in a 6 x8 greenhouse. It drops the temperature from 90's+ to 80's when the sun is full. Works great and has significantly reduced the need for a fan.

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The Univent is a terrific product!

 from Berkeley, CA– Verified Buyer

This is a really good product. It works as advertised so now I don't have to go out and open my orchid house doors manually each morning and close them each night.

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Takes the worry out of venting!

 from Chesapeake Beach, MD– Verified Buyer

As stated earlier. It takes the worry out of venting.

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OUR SKU # JU1055

This item is also sometimes listed under the following manufacturer numbers: JU124