This high quality, large, walk-in greenhouse is crafted with a powder coated steel frame and middle rails for additional stability against the elements. The one-piece rip-stop cover isUV protected and features zippered front door + back door and 5 side vents for enhanced ventilation. Great for starting or protecting plants and flowers, it’s made of a 100% waterproof material.Transparent poly material allow maximum solar performance for plant, keep a warmer temperature. Reinforced PE leno make the cover stronger than normal poly material. Double zippered front door + back door and 5 exhaust vents are designed for cross ventilation and venting on hot days. Full closed cover maintains high humidity levels for growing tropical plants, vegetables, fruiting plants and herbs.