Silverline uses AbbeysteelTM Sustainably Sourced Steel, which is steel re-used from the automotive industry as a by-product of their manufacturing processes. Using re-used steel provides a saving of 7.5 tonnes of CO2 for every tonne of steel compared to recycled steel, helping to make Silverline's office products more environmentally friendly. The re-used steel is taken from parts like car doors and windows and reshaped for use in Silverline's filing cabinets and storage units.