This cold frame is a great addition to any gardener. It is made from fir wood and polycarbonate panels, with 2 shelves to place plants. This grow house is ideal to keep the temperatures cool for the summer and warm in the winter. This will also protect the plants against harmful UV rays which will promote better growth and will be a great item to have for nursing young buds. The house comes complete with 2 shelves, top access opening and double doors for forwarding opening. This is a great solution for any gardener and ideal for any time of the year. Dakota Fields