Janssens | Automatic Opener for Louvered Window cupola roof Foundation Kit Included

Foundation Kit Included

Also known as T-Head or Hammer bolts

Glass Walls

full-sized door fits seamlessly into the gable end of your greenhouse

The system includes the CONTROLLER 69 PRO

Janssens | Automatic Opener for Louvered Window cupola roof Foundation Kit IncludedThe 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