Six burner stainless steel cooktop, model JGCP436. Currently set up to use LP gas, but can be converted back to use Natural Gas with purchase of replacement gas orifice(s). Electric igniters. Three sizes of burners: 20,000 BTU/h, 15,000 BTU/h and 5,000 BTU/h. The 2 large burners have stacked power burners with an upper and lower level of flame, allowing a range of power from high using both levels to Simmer Hi and Simmer Lo using one level. Small burner reaches a low of 500 BTU/h for melting butter or chocolate. Current models cost $4600, asking $500 obo.