All good reasonable questions. And here's your answers, HydroHut is probably the most famous but there are several similar grow "tents" that are all good for cannabis. All the other stealth "cabinets" or otherwise just will not work for cannabis.

There are DIY plans and links out there that will ultimately create something that is the same but until you have a lot of experience, it will NEVER match the features of the tents. They have inlets, outlets, carbon filter and light hangers, trellis support, etc...Find one to your liking in size.