The recipe for 4 Barred Wood Windows, once unlocked, is (as of R23 in October 2015): * 1 Canyonstone (any type, can also be Dark Canyonstone or Ruddy Canyonstone), * 4 (blocks of) Wood (any type), from any tree or log * 4 Wood Rods, made of any kind of Wood or Logs in a Processor * 1 Stone Rod, made of Stone, Limestone or Bedrock in a Processor or found in Stone Treasure Chests Even though these windows are made of wood, they are fireproof and can even be placed into liquid Lava without catching fire - different from inflammable Wood Windows.