Durable, UV-resistant 6.0 mil polyethylene film designed for use with greenhouses and high tunnels. Light transmission is comparable to glass for healthy crop growth. Provides protection from frost and wind to extend your growing season for both warm-season and cold-season crops, resulting in increased yields and profitability throughout the year. Protecting crops from harsh environmental conditions can help to reduce plant damage and allow for better pest and disease control, minimizing the need for chemical inputs. 4-year lifespan. Note: Polyethylene (PE) film may react with polyvinyl chloride (PVC) pipes, resulting in loss of integrity. Johnny's Selected Seeds does not recommend, and does not warranty, the use of Tufflite IV™ film for any applications in direct contact with PVC.