Sorting happens at the moment of throwing here, because two zones sit side by side under a single 16.5 by 12.5 by 24 inch shell with an 8 by 7 inch opening over each. Recycling on one side, food waste on the other, 16 gallons in total. The sensor picks up movement at 6 inches, opens in 0.3 seconds and shuts 5 seconds later, so neither lid is ever touched. Press instead and the lid parks at 87 degrees for longer jobs, closing softly afterwards. Bags need a width of 15 inches or more and a depth of 25.5 to 27.5 inches. A three-layer stainless steel wall resists dents and fingerprints, and at 10.5 pounds the can stays upright when a lid is pushed shut by hand.