Environmentally-conscious production and ecologically irre- proachable products are among Interstuhl’s hallmarks and were also top priority in the development of Unisonos. The environmental management at Interstuhl fulfils the requirements ofDIN EN ISO 14001; andthe Total Quality Management has been certificated in accordance with DIN EN ISO 9001 since 1993. Interstuhl backs all themodels of the Unisonosprogramme with a long-term guarantee offive years and a com-prehensive guarantee ofthree years.

U 400Four-leg tubular steelframe, powder coatedanthracite; optional: brilliant silver or chrome-platedStackableSeat and backrestupholstered without the use of adhesivesPlastic parts dye penetrated(scratch resistant)Backrest 47 cm highOptional: Felt glidesPage 6 U 450Four-leg tubular steel framewith armrests, powdercoated anthracite; optional:brilliant silver or chrome- platedSeat and backrestupholstered without theuse of adhesivesPlastic parts dye penetrated (scratch resistant)Backrest 47 cm highOptional: Felt glides U 500Free swinging tubular steelframe, powder coatedanthracite; optional:brilliant silver or chrome-plated StackableSeat and backrest uphol-stered without the use of adhesivesPlastic parts dye penetrated(scratch resistant)Backrest 47 cm highOptional: Felt glidesPage 7 U 550Free swinging tubular steelframe with armrests,powder coated anthracite;optional: brilliant silver orchrome-platedSeat and backrestupholstered without theuse of adhesivesPlastic parts dye penetrated (scratch resistant)Backrest 47 cm highOptional: Felt glidesPage 7