It doesn't seem to give any greenhouse effect on plots, however, the fact that it's see through AND that it's treated as a wooden structure makes it a better choice for a window or an option for a better view of the landscape than the greenhouse structures.
Once placed, the Glass Door's name shows as "Reinforced Wooden Door"
Unlike greenhouse door doesn't make that annoying sound of metal door.
The Reinforced Glass Door is treated as a wooden structure and can not be damaged by hands, stone weapons, or non-explosive ranged attacks.
The following aggressive creatures can not damage the Reinforced Glass Door: