Bayliss Solar Powered Vent Opener

Heat activated wax expands and contracts depending on your internal greenhouse temperature


The standard Bayliss opener has an adjustable operating temperature between 55 & 75F (13-18C). Upgrades are available with the Orchid Wax for hot-house environments, and the Hydraulicheck opener for high wind areas up to 90 MPH gusts. Replacement cylinders are available for purchase with a one year warranty.

  • Standard MK7 Triple Spring – $75
  • Hydraulicheck – $130
  • Orchid Wax (operating temperature 70-110F or 21-44C) – $85
  • Super Heavy Lifter (double glass) – $195

Greenhouse Vent Opener