National Hardware N193-789 Round Rail, Steel, Galvanized, 2-3/8 in W, 2-13/32 in H, 144 in L Hobbies & Toys A tough carbide-grade is combined

A tough carbide-grade is combined with a durable 4 TPI tooth design

permanently lubricated motor bearings

Resists damage from minor expansion and contraction by weather

tall or wet

National Hardware N193-789 Round Rail, Steel, Galvanized, 2-3/8 in W, 2-13/32 in H, 144 in L Hobbies & Toys A tough carbide-grade is combinedDesigned 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.