I won this light in a contest here on grow diaries, and it has been awesome! It’s huge, and covers the entire interior of my 4x4 grow tent. Its light adjustment switch works well, and is easy to use. The best thing about this light is the unity to remove the power control box and keep it outside the tent. This reduces the amount of heat in the tent by a great degree. I love it, and highly recommend it to anyone with a 4x4 or larger tent.