The Gorilla Grow Tent 2 ft. Height Extension Kit gives you the ability to increase your growing height from 7' to 9' tall. Your plants can now grow up to 50%-60% larger. Never again will you have to worry about your plants outgrowing your lights and room, and you can now experience crouch free maneuvering without banging your head on low hanging lights. You won't just be growing an indoor garden, you'll be creating an indoor forest!