Bayliss Autovent Opener brand_rootcubes Pruden Polystainless Fan with Poly

Pruden Polystainless Fan with Poly Weather Hood

5" VRSG60A Double Panel Motorized Shutter 14000 60

1 3-Ply No PFPS20G 20" 1/3 4

and 96” long

Bayliss Autovent Opener brand_rootcubes Pruden Polystainless Fan with PolyThis 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