Off-The-Grid feature allows burner to be light up by match in case of storm power outage. High efficiency burner with new design to insure 20% to 30% saving, Electric ignition, Safety device with thermal couple & flame out failure detection trigger mechanism, Auto shut off gas supply, Cooktop dimension: 304mm(W) x 510mm(D) x 45.7mm(H, without grate) or 12"(W) x 20"(D)x 1.8"(H, without grate) Counter top cut out dimension: 10.55 inch x 18.9 inch Minimum depth clearance for installation: 3.5 inch depth measured from counter top surface Power input: 110VAC, Natural Gas type, Max. Power: Bottom Hob 7000 BTU, Top Hob 11000 BTU.We provide free exchange for any defect, & there is 10% restocking fee applied on refund / order cancellation. Buyer is responsible to ship unit back in case of refund / order cancellation.