Janssens | Automatic Opener for Louvered Window 12" Impulse Sealer Bed holds 19

Bed holds 19

6mm virtually unbreakable gray polycarbonate panels block up to 99

the Premier Pump is more efficient

Electronics: Includes a Full Color Touch Screen (4

Janssens | Automatic Opener for Louvered Window 12" Impulse Sealer Bed holds 19The 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