…proprietary Flux-Free Grill system limits the flux residue on the cooling grills giving the Heller reflow oven system the highest production yields of any oven! …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…