Janssens | Automatic Opener for Louvered Window cupola roof Also known as T-Head or

Also known as T-Head or Hammer bolts

The system includes the CONTROLLER 69 PRO

Fully Solar Powered: Fitted with a powerful and efficient monocrystalline solar panel

The shade cloth comes in 4-foot sections

Additional boxes are shipped with the rest of the parts

Janssens | Automatic Opener for Louvered Window cupola roof Also known as T-Head orThe Janssens Automatic Opener for Louvered Window is an optional addition to your louvered window in your Janssens greenhouse. The black tube is filled with special paraffin oil which expands when the temperature reaches around 72 F and the piston will push the window open. When temperature falls, a heavy spring pulls the window closed. No electricity needed! WARRANTY 15 Year Limited Warranty