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 63° F to 77° 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 older Grow More and Solar Harvest roof vents that did not include a mounting bracket made for these greenhouses. The standard Univent opener is recommended for new Grow More greenhouse purchases. 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).
Grow More Univent Opener Instructions