Secret Jardin Dark Room 480 Wide (16' x 8' x 6') is specially lined with 95% reflective hammered effect mylar fabric. There has been an increase of the diameter of the tubes from 16 up to 19mm. Pre-equipped for extraction and ventilation, the tents come with equipment bars and accessories to support lamps, and carbon filters. Features Dark Room Technology: 19 mm poles, 5 mm thick plastic corners, Double layers 200 cm (6.7 feet) high => For low space environments like cellar You can open front and end side from middle: easy to enter You can open both sides when you want to bring hydroponic systems inside 4 extraction & 4 intraction & 4 cooltubes (2 line of bulbs) & 8 cable stocks 1 SupportIT included on the DR480w 2 SupportIT included on the DR600w