{
  "variants": {
    "burning=false,facing=north": { "model": "furnace" },
    "burning=false,facing=south": { "model": "furnace", "y": 180 },
    "burning=false,facing=west":  { "model": "furnace", "y": 270 },
    "burning=false,facing=east":  { "model": "furnace", "y": 90 },
    "burning=true,facing=north": { "model": "lit_furnace" },
    "burning=true,facing=south": { "model": "lit_furnace", "y": 180 },
    "burning=true,facing=west":  { "model":  "lit_furnace", "y": 270 },
    "burning=true,facing=east":  { "model": "lit_furnace", "y": 90 }
  }
}