MarsLG Hydroponic Mylar Grow Tent 2'x4' Non-Toxic Hydro Cabinet,MARS482460 Easy, tool-free assembly.Vent duct holes, Removable, water-resistant floor tray in case of spillage Ventilation windows,Tough, black-colored polyester canvas outer shell Metal grid in ceiling for hanging lights and other accessories Sturdy metal frame structure, with nylon push-lock corners