The 60 Series is super-heavy-duty panic and fire exit hardware for use on all types of narrow stile aluminum doors without a mullion. The patented mounting plate system ensures the easiest and most accurate installation of panic hardware available. The 61 Series concealed vertical rod exit device is super-heavy-duty panic and fire exit hardware for use on all types of narrow stile aluminum doors without a mullion. The patented mounting plate system ensures the easiest and most accurate installation of panic hardware available.