Profile: Hart Door Systems Ltd designs and manufactures a wide-range of industrial door products. Our products include high speed doors, fire doors, security doors, blast doors and insulated doors. Speedor super is used in external & internal for manufacturing and storage facilities. It features variable speed drive, patented tension system, safety pressure edge incorporating the deep rubber bottom seal all retained in the neat strong aluminum bottom profile and size range up to 6M wide and 6M high.