GE Monogram ZGU384NSM 30" Gas Cooktop has 4 Sealed Dual Flame Stacked Burners, 140 Degree Simmers, Continuous Interlocking Grates and Indicator Lights. Embedded Knobs. High-output cooking power delivered by an 18,000 BTU burner, totaling 50,000 BTUs. Hand-machined, stainless steel knob controls rotate with smooth precision; A red indicator light embedded in each knob makes it easy to view and select heat settings. Interlocking, continuous grates create a steady surface for cookware and are integrated into the cooktop for a clean, finished appearance.