The largest popcorn machine in the world, built in five days by Greg Scott Abbott, Wink Eller, Lisa Lejohn, Eric Scarlett, Christoff Koon, Charles Cretors (all USA) in Santa Clarita, California, USA, measures 6.77 m (22 ft 2.75 in) tall, 2.92 m (9 ft 7 in) wide, 2.46 m (8 ft 1.1 in) deep and was unveiled in June 2004 on Discovery Channel's 'BIG!' television show. The build was completed using the following materials: Wheels: 4” Steel Channel, Spokes – 5/8” Steel Rod, Wheel hubs – 1/4” Steel Plate Windows: 3/4” Clear Acrylic Frame: 4 X 6 1/4” Steel Square Tube Kettles: (2) 1/4” x 42” Spun Aluminum Spheres Crown: 16ga. Sheet Metal Heating Device: Propane Popcorn Box: 1” Commercial Cardboard The popcorn popper has two kettle cookers, that pop corn simultaneously.