Bayliss Autovent Opener brand_rootcubes 4 Belt 3-Glv VF50GGLT1 50"

4 Belt 3-Glv VF50GGLT1 50" 1 1 19

100% UV protection

Underwriters Laboratories (UL) listed and CSA certified

1 Belt 3-Glv Gold Star Motor

Bayliss Autovent Opener brand_rootcubes 4 Belt 3-Glv VF50GGLT1 50"This non electric roof vent opener is simple to install and is completely automated. A threaded adjuster bolt can set the Bayliss to start opening the vent at approximately 55 degrees Fahrenheit. This vent opener uses a very simple principal Special waxes have an expansion rate of about 18% when heated by the sun. As the air in the greenhouse heats up it also heats the powertube in the vent opener. As the wax expands it pushes out a stainless steel