Extra Roof Window Type:Manual 4 roof windows (2 automatic

4 roof windows (2 automatic & 2 manual)

Available in two hand painted finishes: Antique Bronze & Antique White

We will send either a single door drop kit or a double door drop kit depending on which door is in your greenhouse order

Made from FiberClay - designed to look like classic concrete

Extra Roof Window Type:Manual 4 roof windows (2 automaticAdd more natural ventilation to your greenhouse with extra roof windows manual and automatic openers available. Automatic window openers The black tube is filled with special paraffin oil, which expands when the temperature reaches 72 degrees and the piston will push the window open up to about 14". When temperature falls a heavy spring pulls the window closed. No electricity needed! Manual spindle opener A manual opener that works like a large