Convenient and back-saving Crucible Electric Front Loading Kilns make loading and firing a delight! 4.5 inch walls and reliable 2500∫F elements all around mkae this Crucible our most dependable and efficient kiln! Larger format electric models are normally equipped with Dawson Kiln Sitter and timer. Get the precision and ease with digital control with an installed Barlett or Orton AutoFire Controller. 4 inch energy walls - For this new feature we use the same 3 inch bricks as before but add an inch of insulation to make your kiln extra energy efficient. The 4 each wall can be added to almost any of our kilns. Call for pricing on specific kilns.