Special Nonexistent Furniture
Part #: JU122
SKU #: JU1054

Juliana Greenhouse Ventomax Window Opener


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Arrives for Christmas
  • Juliana Greenhouses Greenhouse Ventomax Window Opener
  • Juliana Greenhouses Greenhouse Ventomax Window Opener
  • Juliana Greenhouses Greenhouse Ventomax Window Opener


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Arrives for Christmas to Ashburn, VA 02108 (Change)

List Price: $60.66
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Guaranteed Delivery By December 24th

Items with the 12/24 Guarantee will be delivered to addresses in the lower 48 states on or before December 24, 2012. This offer does not apply to Alaska, Hawaii, Puerto Rico or Canada.

Any purchase between now and 12/25 can be returned through 1/30.



Product Details
Weight & Dimensions
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.

  • For use with glass-panelled greenhouses
  • Solar-powered opener
  • Allows thermostatic control of roof vents
  • Window attachment measures 12" x 2"
  • Window cylinder is 12" L
  • 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.

Item: Dimensions: Weight:
Greenhouse Ventomax Window Opener 12" W x 2" D Unavailable

Additional Features
Product Category: Greenhouse Accessories
Type: Window & Door Accessories
We're sorry, we have no additional specifications for this product.
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Questions & Answers

Still have questions about this product? We're here to help

“Exactly how big of an attachment are we looking at here?” asked by Maria

"Hello Maria, the actual attachment is 12 x 2 and the cylinder is 12 inches long." Will E from Wayfair

“Could you please tell me what size carton this ships in?” asked by Deron

"Hi Deron, the box for the window is 14" x 3" x 2"." Will E from Wayfair

Average Overall Rating:
(based on 5 reviews)

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Juliana Greenhouse Ventomax Window Opener


Excellent Quality

 from Washington

The window openers are a great quality for a great price. I am very happy with them. They were very easy to install!

Was this helpful? Yes / No

Nice to trust greenhouse won't overheat.

 from Spooner, WI

I have four of these installed in my new greenhouse and they have been working very well to open in the morning as temps rise and close at night. Nice to not have to be around to check.

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Works just the way I expected.

 from Eugene, Oregon– Verified Buyer

I turned an old shower on it's side to make a cold frame for starting my seeds. This works really well to open the door on hot days and close up again as the weather cools. I have no worry about the box overheating.

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Exactly what I wanted

 from Havertown, PA

This is an exact duplicate of the original item that came with my Greenhouse. After about 15 - 20 years the old one finally stopped working. I trust the replacement will give me equally good service.

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 from Nebraska– Verified Buyer

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Manufacturer Details
Juliana has specialized in hobby greenhouses since its founding in 1963. Today, Juliana is the leading European manufacture of hobby greenhouses, exporting products to 20 countries worldwide. Juliana America was established in 1991.

Juliana has a modern production potential, which is able to produce one greenhouse every minute. Juliana has offices in Denmark, England, Germany and United States with production facilities in Denmark and England.

We carry the full line of Juliana Greenhouse products, including coldframes, gardener greenhouses and lean-tos.

When you buy a Juliana Greenhouse Ventomax Window Opener online from Wayfair, we make it as easy as possible for you to find out when your product will be delivered. You can check on a delivery estimate for the Juliana Part #: JU122 here. If you have any questions about your purchase or any other Greenhouse Accessories product for sale our customer service representatives are available to help. Whether you just want to buy a <strong>Juliana</strong> Greenhouse Ventomax Window Opener or shop for your entire home, Wayfair has a zillion things home.

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OUR SKU # JU1054 This item is also sometimes listed under the following manufacturer numbers: JU122