National Hardware N193-771 Round Rail, Steel, Galvanized, 2-3/8 in W, 2-13/32 in H, 120 in L

Designed for doors weighing up to 600 lb. per panel. Can be used with various types of single and multiple brackets. Advanced rail design with flat top and sides for easier mounting and better stability. Self cleaning and smoother operation. Interchangeable with other brands of round rail. Manufactured from galvanized steel.