ALEKO GHOT12X7X7 Large Poly-Tunnel Walk In Waterproof Plant Garden Outdoor Greenhouse Shed 12X7X7 Feet Spacious walk in poly-tunnel greenhouse. Heavy duty green PE mesh cloth cover waterproof, UV protected Strong and durable frame built with heavy-duty powder coated steel. Easy quick assembly Roll-up zippered door for easy access and 6 roll up windows for great ventilation Dimensions: Length: 12 feet Width: 7 feet Height 7 feet Steel tube diameter: 0.75 inches (19 mm) thickness: 0.5. Mesh cloth thickness: 140g/m2