When the job must be tough and fire-conscious, Orion FR 20' x 100' 4 mil clear poly sheeting has you covered. This fire-retardant heavy-duty plastic film is designed for commercial interiors, institutional projects, and large jobsites where safety and code compliance matter. Use it as a vapor barrier for crawl spaces and slabs in commercial buildings, or as a durable dust containment and negative-air enclosure film for offices, hospitals, schools, and retail spaces.Asking if it's strong enough for real construction traffic? The 4 mil thickness plus FR performance makes it suitable for high-abuse, high-visibility containment where workers, equipment, and inspectors are in and out daily. Clear film maintains sightlines and light, helping with navigation and supervision while still keeping dust, debris, and overspray under control. For contractors working under permits and inspections, this roll delivers a professional, fire-retardant vapor barrier and containment solution at scale.