A Grow box is, much like a grow tent, en enclosed system that allows you to grow your plants inside. Grow boxes can be built or bought keyturn ready.
One of the biggest benefits of a grow box is that you have full control over the environment inside. This makes controlling lightcycle, humidity, smell and heat a lot easier.
More grow room definitions:
Grow room | Grow tent | Security | Anti detection foil | Sound proof | Pond liner | Green house