Quictent Greenhouse 15'x7'x7' Arch Large Walk-in Green Garden Hot House RUSTPROOF, Heavy-Duty POWDER COATED STEEL FRAMEWORK, make the whole product more firmly, especially in bad weather. DOUBLE ZIPPERED FRONT DOOR AND 6 EXHAUST VENTS, for cross ventilation and venting on hot days. IMPORTED COVER FROM KOREA, Waterproof UV Protection, for maximum solar performance. OVERLONG DESIGN, makes greenhouse more airtight and secure, just bury it in the soil. ISO 9001:2000 standard certified manufacturer. Easy way,simple life.