Vonhaus replacement walk in greenhouse coverr make sure your greenhouse is never out of action with the vonhaus walk in greenhouse replacement coverr made from weather resistant transparent pvc with ties to secure the cover to the framer roll up zip panel door gives you easy access to the greenhouse and ensures plants benefit from plenty of natural sunlight and fresh airr specificationr suitable for use with many walk in greenhouse frames ndash fits frames measuring approx 195 x 143 x 73cm