TB (Technical Bulletin) is a regulation regarding the flammability of upholstered furniture in California. Muuto products are compliant to TB117 and TB133 requirements.
TB117 (domestic) is a cigarette test, tests the upholstery flammability and specifies test methods for each type of upholstery material. Muuto ensures TB 117 certificates for all relevant upholstery materials and textiles.
TB133 (non-domestic) is a full-scale open flame test of complete furniture used in public spaces. Muuto does not include TB 133 in the standard test program, since the severe test method typical requires flame retardants. TB 133 is not mandatory and will be repealed from 22 January 2020.