All MB seating is made in accordance with the California Bureau of Home Furnishings Bulletin #117-2013. The California Flammability Regulation #117-2013 is a set of minimum allowable standards of flammability to which all upholstered furniture sold in the State of California must comply.

California Technical Bulletin (TB 133)

TB 133 originated in California, but other states have begun to adopt its strict guidelines aimed at promoting public safety.

  • TB 133 is a flammability test for upholstered seating used in public buildings, including healthcare facilities, daycare centers, restaurants, hotels and penal institutions.
  • A fire barrier wrap is upholstered under the fabric to construct Martin Brattrud furniture specified for TB 133. Martin Brattrud must be consulted to obtain pre-approval for fabric and leather to be used on orders requiring TB 133 standard.
  • Barrier wraps and flameproofing affect the hand, sit and look of most styles. These special materials used can yield a firmer seat and less supple hand.
  • Martin Brattrud offers the following two options for projects that have TB 133 needs:
    1. Built for TB 133
      • Fire barrier wrap is used in construction of product but does not include compliance testing and documentation
    2. TB 133 Compliance Testing and Documentation
      • A finished furniture piece identical to the unit(s) to be installed on the job site is required for an independent laboratory burn test
      • If the piece is found in compliance with TB 133 a laboratory report will be provided for project needs and documentation
      • Laboratory testing adds 3-4 weeks to Martin Brattrud standard lead times. Purchase orders will not be placed in production until the additional test unit has received compliance testing and documentation for TB 133.
  • Purchase orders must clearly stipulate if an item is required to be 1) Built for TB 133 or have 2) TB 133 Compliance Testing and Documentation done
  • It is the specifier's responsibility to check with local agencies for flammability and other code requirements.
  • Please contact the factory for TB 133 pricing quotes.