Use it to separate plants at different stages of development, vary the internal conditions based on individual plant requirements, or experiment with different lighting to determine the best combination for growth. The exterior is made from a thick black canvas and has a silver reflective interior coating which lets the light provided from your grow lights stay concentrated on the plants. Also features metal framing made of strong, durable, steel tubing and heavy-duty zippers ; the venting and cord holes offer sleeves with draw strings to seal the exit ports around ducting and cords. Enables you to manipulate the growing environment so that you can achieve the optimum climate for your plants growth. Quick and easy to assemble - no tools required. Simply pull canvas over the frame, zip up and start growing!