Price: $38.95
Availability: Back Order - Expected to ship in 3 to 4 weeks.

The Univent allows solar-powered control of top and side mounted window vents thanks to its dual springs. Univent window openers have an adjustable opening temperature of 60° F to 75° F and an 18" maximum opening which would be reached at approximately 20° to 30°F above opening temperature. Univents are made from corrosion resistant materials including aluminum and stainless steel. This model is recommended for use with Grow More and Solar Harvest greenhouse vents because they include a mounting bracket made for these greenhouses. A minimum of 1 opener is needed per roof vent. 2 openers are recommended for each Grow More roof vent in very windy areas (50 mph winds or higher).

Product Manuals, Tips, Specs, & Guides

Making A Grow More / Solar Harvest Mounting Bracket

Overall Customer Rating of 2 Reviews:

Great products

Recently installed the automatic vent openers and there work perfect. Simple to install. I placed one on each vent corner (2 per vent) as we get a lot of wind gusts. Bad storm came through last week and the vents were fine with no issues. I would recommend and purchase again.


solar harvest automatic vent openers, a real plant saver!

When I built the greenhouse it came with two of these vent openers, during the winter months I did not notice any help, as soon as the sun came out they showed their worth. So I bought two more, no more worries about overheating! They work great, easy to install, and do not require my memory to operate, what more could an old fat guy ask for!!!