Ideal for areas with secondary or low-level radiation. Available in lead equivalencies of 0.25mm, 0.3mm, 0.35mm, 0.5mm, 1.0mm, and 1.5mm. The outer material for lead curtains are available in nylon, vinyl, or weblon. MarShield also offers durable, cost-effective track hardware for our lead-lined curtains. This 12 gauge, enclosed, steel roller track is available in both straight and curved sections.