Our Hydroponics Grow Tent Dark Room in 120" X 60" X 80" multi-purpose growing tent with high value and super quality is perfect for your indoor garden. Completely lightproof laminate fabric in an enclosed system creates a perfect condition for plants to grow up. The double thickness cover is made of heavy duty 100% polyester with highly reflective mylar (Reflective silver). To avoid the tenesmus" happen, eight extra poles (roof bar) added to the middle to offer a good support condition. In addition,Waterproof Inner material in reflective silver lining, which helps hold inner temperature as well as perform thermal convection. As well, the item frames in all light steels with strong steel connectors, especially for strength. Easy set up. You can erect it in minutes even with no tools, screws, nuts or bolts. We provide one year warranty guarantee. Specifications: Dimension: 120" X 60" X 80" Door: D-designed zipper Doors with large zipper side door Tube Diameter:16 × 0.8mm steel pole Cover: Heavy duty Oxford Cloths (Exterior Material) + 100% reflective water-proof Mylar (Inner Lining) Materials: OXFORD with highly reflective Mylar coating Outside color: Black