Beautiful and durable, the Rion Hobby Gardener 8.5 x 16.67 Green Frame Greenhouse Kit gives you the ability to surround yourself with lush, green plants year round. Specially designed so it can be expanded with extensions if your growing needs increase, this greenhouse is insulated with 4mm double wall, light-diffusing polycarbonate panels. With a strong and sturdy, maintenance-free, PVC resin framework, this greenhouse is wind resistant up to 80 mph and the roof can hold up to 1100 lbs. of snow. The hinged doors are easy to open and close, and add extra ventilation, while the greenhouse is easy to assemble and includes a full, seven year warranty.