NSF/ANSI 336: Sustainability Assessment for Commercial Furnishings Fabric is the principal standard used to evaluate and certify sustainability of commercial furnishing fabrics over their entire product life cycle. NSF/ANSI 336 was developed by the NSF National Center for Sustainability Standards (NCSS) through a consensus-based public process with a multi-stakeholder group of manufacturers, suppliers, regulatory agencies, academicians and other industry participants. This standard addresses the environmental, economic and social aspects of furnishing fabric products. Based on life-cycle assessment principles, NSF/ANSI 336 employs a point system to evaluate furnishing fabric against established prerequisite requirements, performance criteria and quantifiable metrics in eight key areas: Fiber sourcing, Safety of materials, Water conservation, Water quality, Energy, Air quality, Recycling practices in manufacturing and end of use and Social accountability. Total points determine certification at a Conformant, Silver, Gold or Platinum level.