WiFIRE Technology - Wifi controller connects grill to smartphone with Traeger App. App controls temperature adds smoke and downloads hundreds of recipes with guidance. D2 Direct Drive - variable speed fan and auger for optimal wood pellet smoke production. Holds up to 34 burgers 6 rib racks or 6 chickens. Single meat probe. 2-Tier grate system. 780 Square inch total cooking space. 450F Maximum temperature. Main tier grate: 30"W x 19"D. 2nd tier grate: 30"W x 7"D. Dimensions: 49"W x 27"D x 55"H. Ships only in the contiguous 48-states.