| Materials / Specification • Tubing: ASTM A240 Type 304 321 Stainless Steel • Jacket: UV resistant Polyethylene complying with requirements of ASTM E84 Index for Flame and Smoke. Features & Benefits • Flexibility and durability allows for simple routing through complex building structures and designs • Pre-marked by the foot for easy measuring and installation • Lightweight - 250 feet of 1/2" CSST weighs approximately 38 pounds |