Black/White Poly Sheeting Commercial Size - 5 mil 56 ft x 150 ft This waterproof poly film is black on the outside and white on the inside. The 5 mil thickness polyethylene film offers excellent protection for heavy weight applications and has outstanding puncture, scuff and scrape resistance. The white surface reflects the light striking it and sends the light back to the plants. The black surface helps block the light from getting to the groun... — LTL Shipping Required. — Ships from H: WA, CA, CO, MI, TN, PA, FL USA....more info.