Abstract: A structural improvement of a side post of a fence, wherein the side post comprises a square side post tube and a reinforcing post located inside the side post tube. The four sides of the reinforcing post facing the side post tube are respectively configured with three longitudinal boards and a connecting board extending coaxially with the side post tube and arranged radially. An abutting board is connected to the external end of the connecting board, the abutting board extends coaxially with the side post tube and the board edge of each longitudinal board and the side of the abutting board contact with the tube internal wall of the side post tube.

Abstract: A pole for supporting at least one device thereon, the pole comprising: a post to support weight of the pole and to attach the at least one device thereto; and at least one cover at least partially covering at least one side of the post, the post and the at least one cover together defining at least part of a longitudinal channel in the pole to house the at least one device attached to the post; wherein an edge of the cover is in pivotable engagement with the post to allow access to the post in the longitudinal channel.