Gorilla Grow Tent, 4 by 4-Feet Tents are height adjustable to increase your yields and plant sizes up to 2X, runs cooler and are easy to walk around in The 1680D Diamond Reflective Walls are 3-9X thicker than any other grow tent Gorilla tents also have the strongest metal poles that can hold up to 500lbs on larger sizes for maximum safety and security