Mylar : Sunleaves Black & White Poly

This waterproof poly film is black on the outside and white on the inside. The black backing and white surface work together to reflect 90% of the light striking it and send light back to the growing area. The waterproof, light-proof film also helps prevent algae and mold growth on walls. Double it up by putting the black surfaces together to economically and effectively partition off indoor gardens. Sold 10' wide by 1' lengths.