# The Gas Appliances (Safety) Regulations 1992, Paragraph 3.4.1


Appliances must be so constructed that, when used normally, flame stability is assured and combustion products do not contain unacceptable concentrations of substances harmful to health.

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Source: https://www.legislation.gov.uk/uksi/1992/711/schedule/3/paragraph/3.4.1 (the official version)
Page: https://openlegislation.uk/gas-appliances-safety-regulations-1992/schedule-3/paragraph-3.4.1
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.