A display panel (10) has a plurality of T-shaped slots (12) extending thereacross, for receiving hangers (35) for products. An insert (19) is provided for each slot (12), which insert is made of metal and has a suitable shape to permit the insert (19) to be rolled into the slot from the front face (11) of the panel (10), with only minimal deformation of the insert. A channel (24) is formed along the free edge (23) of an arcuate leg (21) of the insert (19), the channel (24) being directed outwardly whereby a corner region (33) between the outer face (11) of the panel (10) and one side of the slot (12) may locate in the channel (24), so as to secure the insert (19) in position, in the slot.