Janssens | Automatic Opener for Louvered Window 12" Impulse Sealer 6mm virtually unbreakable gray polycarbonate

6mm virtually unbreakable gray polycarbonate panels block up to 99

Bed holds 19

keeping your space tidy and uncluttered

using more materials than typically found in products at this price point

Janssens | Automatic Opener for Louvered Window 12" Impulse Sealer 6mm virtually unbreakable gray polycarbonateThe 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