ULTRA 6MM B & W POLY FILM 10'X100'
This waterproof poly film is black on the outside and white on the inside. The white side reflects light on the growing surface, as it reflects 90% of the light. The waterproof, light-proof film also helps prevent the growth of algae and mold on walls. By putting the black surfaces together, you can economically and effectively partition off indoor gardens.
The product is 10 feet wide.