Project Source 3-ft x 50-ft Clear 3-mil Plastic Sheeting (Medium-duty (2-3 Mil)Our 3 Mil plastic sheeting is a multipurpose film perfect for a wide variety of construction or DIY projects. This medium duty plastic sheeting is commonly used as a vapor barrier in between insulation and drywall, used as a drop cloth or a temporary cover for equipment and supplies. Medium weight consumer grade plastic sheeting Advanced tear and puncture resistant multi layer polyethylene Perfect for painting and medium duty applications Great for