Our 4 year, custom length 8 mil plastic sheeting for greenhouses is engineered with UV inhibitors, and unrolls as a single sheet with NO SEAMS. The virgin poly is comprised of a multi-layer 8 mil film, making it an extremely durable and dependable product. This film is better than 90% translucent, which allows for maximum light and heat transmission. Clear films like this work best for germinating seeds or for the start of plant growth, and are ideal for growers in high UV regions. We are the ONLY SELLERS of this unique product in the United States!