About this item Raises the maximum height of the 2’x2′ Original Gorilla Grow Tent to 8’11” tall. Raises the maximum height of the 2’x2′ Gorilla Shorty Tent to 7’8″ tall. Allows for tremendous versatility during the growing process. If your plants are getting too close to your grow light, just raise the roof! Our extension kits also allow you to raise your plants off the floor if desired, without losing previous growing space. More usable growing height allows you to cultivate larger plants. Larger plants produce larger quantities of fruits and flowers, increasing your harvest yields! Heat rises. With the additional height this kit provides, heat will stay up by your grow lights and away from your precious plants. What does this mean for you? It means that your plants will produce larger, tastier, better-smelling harvests.