The standard “natural convection” drying cabinets are supplied with a sliding stainless steel shutter on top for ventilation. LEEC drying cabinets are also available with a circulation fan or extract fan. A circulating fan can be incorporated for improved drying performance. The air is drawn upwards through the body of the cabinet and returned via a full width air duct to the heaters in the base. Where an extractor fan for exhausting moisture to outside the building is fitted, the fan will be located in a chimney which adds approximately 200mm to the overall cabinet height and terminates in a 100mm diameter spigot.