Designed to fit most four tier mini greenhouses, this reinforced cover from Christow is a perfect replacement for a damaged cover and an ideal upgrade for a standard PVC cover. The reinforced polyethylene cover consists of an internal grid sandwiched between two layers of durable polyethylene. This 3-ply construction makes it far more hardwearing than PVC. It also helps to stabilise the frame and provide better insulation to plants and flowers
