Janssens | Automatic Opener for Push Open Side Window or Roof Window VI34 and a powder coated galvanized

and a powder coated galvanized steel frame

Our durable

Optional roof crests and finials for a more traditional look

Palram - Canopia Shade Cloth for Palram - Canopia Greenhouses

Janssens | Automatic Opener for Push Open Side Window or Roof Window VI34 and a powder coated galvanizedThe Janssens Automatic Opener for Push Open or Roof Window is an optional addition to your Push Open or Roof 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