If you have a green thumb, the 6.7 ft. x 7.8 ft. Meridian Greenhouse is the perfect addition to your home. Its 6-foot-high side walls make it comfortable for standing and help ensure proper airflow. The 32-inch-high cedar base walls are built with sturdy tongue-and-groove construction. They also enable you to store gardening tools away from view, and built into the base walls are a 16-inch lower shelf and an 8-inch upper shelf. The double-wall polycarbonate windows are strong and durable. Their double-wall construction gives them superior insulation and UV properties that help plants grow. A heat-sensitive, automatic roof vent opener helps the Greenhouse maintain optimum temperature and humidity levels, and a louvered base wall vent enables proper air intake.