A hub and arm assembly for mounting on a pole, the assembly including a hub having an inner wall and an outer wall with at least one reinforced area formed thereon, the inner wall having a bottom surface, a plurality of transversely extending walls extending between the outer wall and the inner wall with at least one channel being defined therebetween, a supporting member having a vertical segment sized to fit within the channel, and a support arm extending outwardly from the vertical segment, the support arm having a downwardly extending segment designed to abut the reinforced portion of the outer wall.
