Product review (1 stars): NOT SEALED
This is NOT a sealed burner unit.  Burner tops come right off.  The steel gas tubes down inside the cooktop rest against the bottom, so any drips that get past the unsealed burners will start rusting the gas lines.  It sat in my garage for a while after purchase b/c I had some unexpected travel.  Unboxed today, a week after the return deadline.  installed anyway.  I may try some high temperature gasket maker to seal the burners myself.