A sign holder assembly comprises a cross bar and a mounting member. The mounting member is selectively coupled with the cross bar and includes a front panel, at least two elongated reception channels, a first flange, and a second flange. Each of the at least two elongated reception channels is sized and shaped to sit over and extend at least partially around the cross bar to couple the mounting member to the cross bar. The first flange is offset from and extends substantially parallel to the front panel; the first flange defines a free top edge of the mounting member. The second flange is substantially coplanar with and extends in an opposite direction as the first flange to define a free bottom edge of the mounting member opposite the free top edge. The first flange and the second flange are configured to collectively receive a sign holder support member.