{
  "schema_version": "2.0",
  "_notes": "19\" AV-install rack catalogue. Two families: (a) open-frame 4-post racks per Felix Brandt's original spec (RACK_BUILDER_DESIGN.md §1) — no doors, no side panels, full top/bottom vent; (b) enclosed server-style cabinets in the StarTech RK4236BKB family (mesh-glass front door, perforated-steel rear, full steel side panels, castors). Outer width 600 mm fits standard 19\" rails (482.6 mm) plus 40 mm posts each side. 1 U = 44.45 mm. Castors add 100 mm to outer height when fitted. Door frames add ~27 mm to outer height on enclosed cabinets. Schema fields documented in docs/RACK_CATALOGUE_SCHEMA.md.",
  "racks": {
    "open-frame-12u": {
      "label": "12U open-frame",
      "u": 12,
      "outer_w_mm": 600,
      "outer_d_mm": 600,
      "outer_h_mm": 714,
      "weight_kg": 22,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "open-frame",
      "front_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "rear_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "side_panels": false,
      "vent_top_pct": 100,
      "vent_bottom_pct": 100,
      "legacy": true
    },
    "open-frame-18u": {
      "label": "18U open-frame",
      "u": 18,
      "outer_w_mm": 600,
      "outer_d_mm": 800,
      "outer_h_mm": 981,
      "weight_kg": 28,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "open-frame",
      "front_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "rear_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "side_panels": false,
      "vent_top_pct": 100,
      "vent_bottom_pct": 100,
      "legacy": true
    },
    "open-frame-24u": {
      "label": "24U open-frame",
      "u": 24,
      "outer_w_mm": 600,
      "outer_d_mm": 800,
      "outer_h_mm": 1248,
      "weight_kg": 34,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "open-frame",
      "front_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "rear_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "side_panels": false,
      "vent_top_pct": 100,
      "vent_bottom_pct": 100,
      "legacy": true
    },
    "open-frame-33u": {
      "label": "33U open-frame",
      "u": 33,
      "outer_w_mm": 600,
      "outer_d_mm": 1000,
      "outer_h_mm": 1648,
      "weight_kg": 46,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "open-frame",
      "front_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "rear_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "side_panels": false,
      "vent_top_pct": 100,
      "vent_bottom_pct": 100,
      "legacy": true
    },
    "open-frame-42u": {
      "label": "42U open-frame",
      "u": 42,
      "outer_w_mm": 600,
      "outer_d_mm": 1000,
      "outer_h_mm": 2049,
      "weight_kg": 58,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 0,
      "castors": false,
      "style": "open-frame",
      "front_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "rear_door": { "type": "none", "perforation_pct": 100, "glass": false },
      "side_panels": false,
      "vent_top_pct": 100,
      "vent_bottom_pct": 100,
      "legacy": true
    },
    "enclosed-12u": {
      "label": "12U enclosed (mesh-glass door)",
      "u": 12,
      "outer_w_mm": 600,
      "outer_d_mm": 800,
      "outer_h_mm": 741,
      "weight_kg": 32,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "enclosed",
      "front_door": { "type": "mesh-glass", "perforation_pct": 63, "glass": true },
      "rear_door": { "type": "perforated-steel", "perforation_pct": 50, "glass": false },
      "side_panels": true,
      "vent_top_pct": 40,
      "vent_bottom_pct": 0,
      "legacy": false
    },
    "enclosed-18u": {
      "label": "18U enclosed (mesh-glass door)",
      "u": 18,
      "outer_w_mm": 600,
      "outer_d_mm": 800,
      "outer_h_mm": 1008,
      "weight_kg": 40,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "enclosed",
      "front_door": { "type": "mesh-glass", "perforation_pct": 63, "glass": true },
      "rear_door": { "type": "perforated-steel", "perforation_pct": 50, "glass": false },
      "side_panels": true,
      "vent_top_pct": 40,
      "vent_bottom_pct": 0,
      "legacy": false
    },
    "enclosed-24u": {
      "label": "24U enclosed (mesh-glass door)",
      "u": 24,
      "outer_w_mm": 600,
      "outer_d_mm": 800,
      "outer_h_mm": 1275,
      "weight_kg": 46,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "enclosed",
      "front_door": { "type": "mesh-glass", "perforation_pct": 63, "glass": true },
      "rear_door": { "type": "perforated-steel", "perforation_pct": 50, "glass": false },
      "side_panels": true,
      "vent_top_pct": 40,
      "vent_bottom_pct": 0,
      "legacy": false
    },
    "enclosed-33u": {
      "label": "33U enclosed (mesh-glass door)",
      "u": 33,
      "outer_w_mm": 600,
      "outer_d_mm": 1000,
      "outer_h_mm": 1675,
      "weight_kg": 58,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "enclosed",
      "front_door": { "type": "mesh-glass", "perforation_pct": 63, "glass": true },
      "rear_door": { "type": "perforated-steel", "perforation_pct": 50, "glass": false },
      "side_panels": true,
      "vent_top_pct": 40,
      "vent_bottom_pct": 0,
      "legacy": false
    },
    "enclosed-42u": {
      "label": "42U enclosed (mesh-glass door)",
      "u": 42,
      "outer_w_mm": 600,
      "outer_d_mm": 1000,
      "outer_h_mm": 2076,
      "weight_kg": 70,
      "post_section_mm": 40,
      "frame_top_mm": 40,
      "frame_bottom_mm": 40,
      "castor_h_mm": 100,
      "castors": true,
      "style": "enclosed",
      "front_door": { "type": "mesh-glass", "perforation_pct": 63, "glass": true },
      "rear_door": { "type": "perforated-steel", "perforation_pct": 50, "glass": false },
      "side_panels": true,
      "vent_top_pct": 40,
      "vent_bottom_pct": 0,
      "legacy": false
    }
  }
}