16, Galvanized Trolley Rail, Designed For Doors Weighing Up To 450 LB, Can Be Used With Many Types Of Single & Multiple Brackets, Use With N104-638, N104-752 Bracket Spacing At 24" OC, Galvanized Coated Steel, U Screws For Attaching Rail Are Packed With Brackets, Not Included, Meets ANSI/BHMA A156.14 Grade 1 Specifications.
