Traeger TFB85WLE Timberline 850 Grill. Starting at the core with a pill-shaped barrel, double-wall stainless steel interior, and airtight lid gasket, the Timberline is built with the structural integrity of Fort Knox. Grill more with the three-tier stainless steel grates, and cook it all 20% faster* thanks to the new TRU Convection system. Adjust your grill from the couch, or across town, with The Timberlines WiFIRE controller. It lets you adjust the smoke, set timers and change or hold set temperatures from 165F to 500F within +/- 5F** all from your phone via the Traeger App.