Designed to fit most four tier mini greenhouse frames, this Christow Reinforced 4 Tier Mini Greenhouse Cover is a perfect replacement for a damaged cover and a great upgrade if your existing cover is made from standard PVC. The reinforced polyethylene cover consists of an internal grid sandwiched between two layers of polyethylene. This triple layer design makes it far more durable than PVC. It also helps to stabilise the frame and provide better insulation. A roll-up double zipped door with ties to secure it offers easy access when tending to your plants. Christow 4 Tier Mini Greenhouse Reinforced Replacement Cover Slip over polyethylene cover for 4 tier mini greenhouses Superior durability and insulation than standard PVC Ties to tightly secure to the frame of your greenhouse Roll-up double zipped door for easy access 2 ties to secure door when tending to plants and flowers Allows plants to absorb sunlight throughout the day Helps to insulate them when the temperature drops at night For frames measuring H158cm x W69cm x D49cm