The building is served by a linear core to the eastern elevation with a recessed 3 metre wide intermediate zone which connects the main office space to the core. In contrast to the more usual central core floorplate, this layout maximises the clear useable floor area of a typical floor (4,902 square feet - 455.4 square metres) with highly efficient, light and modern office accommodation. The ‘duality’ of Vitro’s site - the two 'fronts’ of Fenchurch Street and the station plaza - are expressed in the elevational treatment. Both of these elevations are treated equally; there is no perceived ‘front and back’. This is emphasised by the route through the galleried entrance at ground floor and the extensive use of a modulated glass façade, which physically and visually connects the ‘street’ to the ‘plaza’. Vitro has been constructed using the highest quality of materials to provide an office building, striking in design but without compromising occupiers’ demands for highly flexible, useable office accommodation.