Simplex Grinnell 63 Nahatan St Norwood, MA 02062 Phone : (781) 828-5310 Simplex Grinnell Business Category Security Equipment & Systems Sprinklers-Automatic-Fire (Wholesale) Grinnell Fire Protection Systems Company 65 Shawmut Rd Canton, MA 02021 Phone : (781) 828-5310 Business Category Fire Protection Consultants & Services Fire Departments Fire Protection Services