Save money by starting your plants early from seed and extend your season by protecting plants from fall frosts with these easy-to-assemble greenhouses.Each has a rugged, rust-resistant, bolt-together aluminum frame. Twin-wall 4mm polycarbonate panels provide twice the amount of heat retention of single-layer panels. Plus, all come standard with a swinging front door, rain gutter, roof vent and galvanized-steel base kit. Conserve water by using the downspout to collect rainwater. Available in standard silver or natural green powder-coated finish. Available: 8L x 6W, 6L x 6W. Colors: Green, Silver. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Color: Natural. Type: Greenhouses.