Abstract: A sign in accordance with this invention comprises a pair of end members, with each end member having a longitudinal groove, and with each of the end members having a foot portion configured such that the respective longitudinal groove bears approximately a 15.degree. relationship to the vertical. The longitudinal groove in one of the end members faces the longitudinal groove in the end member such that respective ends of a generally rectangular sign of appropriate thickness may be closely received in these grooves. Importantly, the groove in each of the end members is of dual width, with one portion of each such groove being wide and of comparatively shallow depth, whereas another portion of each of the grooves is comparatively narrow, and of greater depth. Because of this arrangement, elongate panel members of either of two different thicknesses can be readily received in a tight fitting manner in appropriate portions of the grooves.