Drop Door KitThe drop door kit allows a standard Victorian greenhouse to be placed on top of a perimeter wall usually 20" 36" high (24" might be best). This kit does not include the new glass panels needed above the doors they should be ordered locally to size. We will send either a single door drop kit or a double door drop kit depending on which door is in your greenhouse order. If you are planning for multiple entrances, you will need to order a drop door kit