Catwalk gantry run

4m straight catwalk gantry run, a grated plate deck 1.0m wide on slim bolted brackets with a filigree iron handrail at 1.0m on both sides, deck ends flush at exactly 4m so runs chain end to end, galvanised grey and verdigris with rust bleeding at the bolts.

风格：low-poly, flat-shaded vertex colors, no textures, single shared material, so any set of these merges to one draw call; shares palette and scale with its kit