Descrtiption : WhiteCap Premium 20 mil reinforced vapor barrier liner is the strongest and most versatile plastic sheeting that Nash Distribution stocks. We recommend WhiteCap Premium 20 mil for the most demanding jobs! Consisting of virgin polyethylene, thick layer of scrim, diamond reinforcement along with U.V. inhibitors and thermal stabilizers. WhiteCap Premium 20 mil is ideal for indoor and outdoor applications. This product is also food-grade safe since the resins used in the food contact layer are FDA 21 CFR 177.1520 (c) 3.2 compliant.