1 3/4" Type II Slotted Z-Bar available in various sizes:

11", 14", 20", 26" (not shown)

44" Single Sign    (not shown)

44" Double Sign   (not shown)

                                       45" & 61" Single Sign (not shown)

             (Middle Item Shown is a Type I - Type II have multiple slots & vary in length)

From left to right:

Z-Bar (available in 1 /34", 3", & 4" up to 25' Pieces; Angle Bracket, Type I Z-Bar; U-Channnel (galvanized & avail. in various sizes or Green); Aluminum Tube (available in 2 1/2", 3", 3 1/2", 4", & 6" at various length)