Keep All Light Inside: YINTATECH 4x4x8 plant hydroponic grow tent is made of 600D durable Oxford canvas lined with reinforced PE layer and 100% diamond reflective Mylar, waterproof and wear-resistant, tear-resistant, and the double stitching creates the perfect hatching area, blocking light and retaining heat, allowing plants to thrive. Good Stability of Frame: 4x4x80 indoor grow tent is connected by strong metal clasps; white poles it comes with are thicker and more sturdy than green ones, and tool-free corner connectors to lock the structure securely totally tool-free to finish your installment in minutes. Better Ventilation Inside: Comes with multiple circular double-sleeved vent holes’ built-in mesh with a removable panel that attaches with Velcro which is helpful for heat dissipation and light shield. Considerate Design for More Functions: 48 grow tent is equipped with ventilation ports and supporting bars provided for ventilation and lighting systems with double cinching ducting ports to optimize the effectiveness of ventilation inside your tent; free straps for hanging up other equipment on top bars as well for your convenience. Various Choices for Your Indoor Grow: In YINTATECH 48x48 grow Tent, we have various sizes to satisfy your different growing plan; on the control of light, temperature, humidity, and soil conditions to observe every stage of your plants, having a biggest harvest.