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CSA B149.3-20 with 2021 Ontario Amendments
CSA B149.3:20, Code for the field approval of fuel-burning appliances and equipment, 2021 Ontario Amendments and OREGs
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CSA America, Inc. [csa]
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CSA America, Inc. [csa]
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As the voice of the U.S. standards and conformity assessment system, the American National Standards Institute (ANSI) empowers its members and constituents to strengthen the U.S. marketplace position in the global economy while helping to assure the safety and health of consumers and the protection of the environment.