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About This Item


Full Description

This National Standard of Canada apply to Factory-Built Type A Chimneys, which do not require field fabrication. They are for use with gas and liquid fuel-fired residential appliances and building heating equipment, where the appliance or equipment flue-gas temperatures do not exceed 540 °C. They are intended for installation inside or outside of buildings to provide an essentially vertical conduit or passageway for conveying flue gases to the outer air from the above-described class of appliances.

Document History

  1. ULC 604


    Standard for Factory-Built Type A Chimneys (CAN/ULC-S604:2016)

    • Most Recent
  2. ULC 604

    Standard for Factory-Built Type A Chimneys (CAN/ULC S604)

    • Historical Version