A corrugated steel wall bay for the station kit: a 4 m by 3.5 m frame 0.28 m thick clad both sides in fluted sheet that stands 22 mm proud of the studs, on a cast plinth with a rusted head rail. The pivot is on the grid origin, so bays run end to end and stack at a 3.72 m storey pitch over the floor deck. Dimensions 4.00 × 3.53 × 0.52 m (X × Y × Z). Metre units, +Y up, +Z front; origin on the ground at the footprint centre unless stated. Damp conifer forest realism: wet concrete and corroded corrugated steel, weathered pine, dark bark and soil, deep needle green, olive canvas, gunmetal and machined steel, with five emissive colours (amber fire, white floodlight, green status, blue screen, red warning) that also form the loot rarity ladder. Static geometry; no rig, animation, collision or navigation data.