Ventomax Automatic Window Opener

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Regularly $42.00
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Product Summary:

Juliana Ventomax Automatic Window Opener

Easy to Install, Simple to Use

Vent openers do not require electricity. The opener has a metal cylinder containing a mineral which expands when heated. This pushes a piston that opens the vent. As the temperature cools, the mineral shrinks and a spring closes the vent and resets the piston. The opening and closing of the vent is gradual allowing just the right amount of air flow for cooling.

This control allows solar-powered control of top or side mounted window vents. These window openers have an adjustable opening temperature of 60°F to 75°F and an 18" maximum opening which would be reached at approximately 90°F.
  • Lifting capacity is 15 lbs. M
  • Made from corrosion resistant aluminum & stainless steel 
  • Warranted by Juliana for 1 year.
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1 rating | Write Your Own Review
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Not as pictured, 2/12/2011

Thos from

Ordered this item for a cold frame opener. The item I rec'd was not aluminum and stainless as stated, but a not very substantial steel. It was a different design that won't work for a cold frame lid since the cylinder on the unit I got protrudes several inches past the hinge plate, making it suitable only for vents that are flush with the wall or roof of a greenhouse. After two calls to customer service, still no promised RMA to return or exchange this item. Not a good first impression of garden.com!

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