Aluminium posts
art. 8101100: HingePost ALU (single gate)
art. 8101102: HingePost+ Foot ALU (single gate)
art. 8101110 : HingePost ALU (double gate)
art. 8101112: HingePost ALU + Foot (double gate)
art. 8101101: HingePost ALU (double gate)
art. 8101103: HingePost+Foot ALU (double gate)