These “top of the line” controls will open and close greenhouse vents automatically without electricity. Bayliss vent openers convert energy from the warmth of the sun into mechanical energy to open vents. The hotter it gets, the wider the vents are opened.

Materials: Bayliss vent controls are made from the best corrosion resistant materials: brass, stainless steel and satin-anodized aluminum. They are designed to give many years of service, are covered by a 2-year guarantee, and can be repaired should the need arise.

Capacity: The Bayliss can exert a force of 14 lbs. at the point where it is attached to the vent. A threaded hex bolt can adjust the Bayliss to start opening the vent at temperatures between 55º F and 75º F. Maximum opening of 12″ is reached at approximately 20º F above the starting temperature.

Openers can be installed in a series on a long vent to replace worn out electric vent motors. The adjuster bolt can equalize the loading
so the lifters work in unison.

Installation: Easy to install with screws: top arm to vent, bottom arm to greenhouse frame. Illustrated directions included. Openers are about 12″ long and fit neatly up close to the glass.

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The team at Charley’s Greenhouse & Garden is standing by ready to help.