building materials , aluminium beams
Aluminium extrusion beams , 5m long, 15 X 5 cm , 15 kg each, corrosion free ,painted [slight damage] included is a track for interlocking or sliding screens, shade cloth or canvas can be added, by bolt-rope ::many applications for structural post , risers, purlins , awnings , deck, carport , insulated roof, pergola. slide, ramp [with raised edge] , water conduit. air duct. pop-rivets with a strip or sheet metal, drill to lace net / mesh :: 15 pieces are available.