Triton Products 1701 Storability Vertical Hang Rail and Mounting Hardware 63-Inch L Gray Epoxy Coated Steel 3 part vertical hang rail locks into the horizontally installed top track to form the frame Mount to wood frame, hollow wall and concrete or concrete block walls using included hardware 2 sets of mounting holes allow accessories to be installed modularly side by side Assembled length of the vertical hang rail is 63 In. long Expand the system by adding one top track and one hang rail to the right or left hand side of the frame