Janssens | Spindle Opener for Roof Window BOOKCASE With a rust-resistant aluminum frame

With a rust-resistant aluminum frame and virtually unbreakable polycarbonate panels

full-spectrum lighting with UIS smart control compatibility

climbing plants

generally speaking user does not need to add additional water if the nitrogen content is sufficiently added

Janssens | Spindle Opener for Roof Window BOOKCASE With a rust-resistant aluminum frameThe Janssens Spindle Opener for Roof Window is an optional addition to your Roof window in your Janssens greenhouse. This is a manual opener that works like a large threaded screw for Royal or Junior Victorians. Very strong and heavy duty good for high wind areas long handle NOT included. If you already have a spindle opener, you should already have the handle. If not, you can order the Long Handle for Spindle Opener here. WARRANTY 15 Year Limited