Size Range：1/2″ through 24″ Material：Carbon steel Finish：Zinc plated, other finish available upon request Service： ● Recommend for suspension vertical steel pipe risers Approvals： ● Complies with Federal Specification A-A-1192A (Type 8) WW-H-171-E (Type 8) and MSS-SP-69 (Type 8). ● FM approved (Sizes 3/4″ through 8″) ● UL/ULC Listed (Sizes 1/2″ through 12″)