Product review (4 stars): Overall it's good. Need redo the duckwork.
This is a replacement for our old GE profile cooktop. But the existing ductwork didn't work with this one. Amazon installation service doesn't include making the duct work. The cooktop under parts are much lower, after attaching the transition duct as manual suggests, it only leaves a few inches to the bottom of the cabinet and there is no way to connect any other duct to it. Good thing, Lowes has 90 degree turn stack hood and 6" semi rigid flexible duct, so it works.