Zippered Roll-up Door & Mesh Window: A zippered roll-up front door provides easy access to manage plants; The roll-up mesh window improves ventilation and temperature control while making it easier to keep pests out and to observe your plants High-quality PE Cover: The 130g PE material both prevents damage to plants from harmful rays and inclement weather and improves solar heat and light retention, easily extending plants' growth period to make your garden thrive year-round Sturdy & Stable Framework: The shape of the tent design coupled with the heavy-duty steel frame material makes this greenhouse extra sturdy; The hexagonal structure at the bottom increases stability and expands the internal space Extra-long Cover Design: An extra-long cover means you can bury the base into the ground, reinforces the stability and airtightness of the greenhouse, improving the environment for tropical and other delicate plants Extra Ropes and Anchors: 4x ropes and 9x ground stakes help strengthen stability and security; Use ropes and stakes to reinforce your tent and protect your plants from wind and rain VIVOSUN green house is supported by a heavy-duty frame. Even in undesirable weather, it’s the warmest harbor for your plants. Also, the frame is galvanized, strengthening its ability against rust.