This cleanroom oven has an all heliarc-welded stainless steel interior, two adjustable perforated stainless steel shelves and rapid heat recovery. The controller is capable of a 40 step ramp and soak profile, or 4 files with 10 steps per file. It has three adjustable air intake and exhaust ducts that are easily removed for cleaning and allow the use of either room or recirculated air. This cleanroom oven is made with 3.5 inches of high-temperature, wrap-around insulation and a high-temperature silicone door gasket.