Salt Spray Proof PVC Roof Gutter for Greenhouse Frame Roof Covering Worldwide This Salt Spray Proof PVC Roof Gutter is engineered for greenhouse frame roof covering, delivering salt-spray protection that keeps surfaces rust-free for dependable long-term performance. Its stable, easy-care surface keeps maintenance low through years of outdoor exposure. Product Specifications Product Name PVC Walling Panel Effective Width 1050mm Length Customized Product Thickness 1.0mm-3.0mm