Triangle Duct Markers

Triangle Duct Markers

identify equipment & air flow
in the ductwork systems.

Much like pipe marking labels, triangle duct markers are essential for alerting employees of the contents of the duct. These labels use the same ANSI color scheme that pipe marking labels follow to promote continuity in all facility labeling efforts. Not only that, but they also simultaneously work to denote the flow direction of the duct’s contents.


Made of durable adhesive vinyl, these triangle duct markers are made to last for five plus years without the need for replacement. If you don’t see a triangle duct marker you like here, call us at 1-886-777-1360 or send an email to info@creativesafetysupply.com! We’d be happy to help you create custom labels at no extra cost.

Free OSHA Label and Sign Chart

Free OSHA Label and Sign Chart

Recognize hazard signs at a glance with a free chart of OSHA’s sign and label color scheme.

  • Create Custom Labels

    Create Custom Labels

    $3.75
  • Foul Air - Triangle Duct Marker

    Foul Air - Triangle Duct Marker

    $18.99
  • Hazardous Air - Triangle Duct Marker

    Hazardous Air - Triangle Duct Marker

    $18.99
  • Other - Gray - Triangle Duct Marker

    Other - Gray - Triangle Duct Marker

    $18.99
  • Other - Black - Triangle Duct Marker

    Other - Black - Triangle Duct Marker

    $18.99
  • Warm Air - Triangle Duct Marker

    Warm Air - Triangle Duct Marker

    $18.99
  • Outside Air - Triangle Duct Marker

    Outside Air - Triangle Duct Marker

    $18.99
  • Cold Air - Triangle Duct Marker

    Cold Air - Triangle Duct Marker

    $18.99
  • Hot Air - Triangle Duct Marker

    Hot Air - Triangle Duct Marker

    $18.99
  • Dirty Extract Air - Triangle Duct Marker

    Dirty Extract Air - Triangle Duct Marker

    $18.99
  • Conditioned Air - Triangle Duct Marker

    Conditioned Air - Triangle Duct Marker

    $18.99

Helpful Resources