Walk In Greenhouse Metal Polycarbonate Green 6 x 6: This large greenhouse is perfect for the home gardening enthusiast. The walk in greenhouse's powder-coated aluminium frame and UV-resistant sheets will keep your plants, vegetables, and more safe. Heavy duty greenhouse's rooftop vent ensures excellent ventilation for your unit. A convenient single sliding door design provides easy access to the transparent greenhouse inside. Our outdoor greenhouse is the ideal solution for keeping your plants healthy throughout the year.