…Cool / External Cool optional 22″ 2049 744 cm (292″) 15 4 Top (std) Bottom Cool / External Cool optional 22″ 2156 869 cm (342″) 17 5 Top (std) Bottom Cool / External Cool optional 22″ *The 1913, 1809 & 1707 Reflow Oven series have 10 inch wide heater modules for reduced liquidus time.