Designed to cover the majority of standard walk-in greenhouse frames, this reinforced cover from Christow is a perfect replacement for a damaged cover and an ideal upgrade if your existing cover is made from PVC. The reinforced cover consists of an internal grid sandwiched between two layers of durable polyethylene. This 3-ply construction makes it far tougher than a standard PVC cover. It also helps to stabilise the frame and provide greater insulation to plants and flowers. A roll-up double zipped door provides easy access when tending to your plants. Features & Specifications: Slip over polyethylene cover for large walk-in greenhouses. Greater durability and insulation than standard PVC. Ties to tightly secure to greenhouse frame. Roll-up double zipped door. 2 ties to secure when tending to plants. Allows plants to absorb sunlight during the day, insulates them at night. Fits frames measuring H195cm x W143cm x D73cm.