The building reached its full height of 492 m (1,614 ft) on 14 September 2007 after the installation of the final steel girder.[17] The final cladding panels were installed in mid-June 2008, and elevator installation was finished in mid-July. The Shanghai World Financial Center was declared complete on 17 July 2008, and was officially opened on 28 August.[2] On 30 August 2008, the tower's observation floors were opened to the public.