These 50.5" wide bulk rolls of Solexx PRO twinwall plastic panels are 5mm thick and made of high density polyethylene infused with UV inhibitors for a warrantied life of at least 10 years. Solexx panels provide a soft, diffused light allowing 70-75% of the natural light to pass through for optimal growing conditions. These durable panels are rolled to minimize shipping and crating costs. Perfect for greenhouses, patios, architectural applications or anywhere rigid covering with a high light transmission is needed.