UPGRADE GALVANIZED MTAL FRAME: this massive tunnel walk in greenhouse is crafted from a quality galvanized completed large obligation metal frame. The cross bars and four strengthened diagonal bars include additional balance to lengthen the serivce life big wander-in tunnel greenhouse is manufactured from a quality galvanized complete/significant obligation steel https://greenhousemanufacturer66766.canariblogs.com/fascination-about-greenhouse-manufacturer-54321267