Duct Markers

Duct Markers

Clearly mark duct
contents and flow.

In facilities that work with hazardous materials, correctly marking ducts, pipes, and other substance delivery systems is crucial to safety. Duct markers communicate to workers, visitors, emergency responders, or anyone else who might need to know which pipe or duct transports what. This visual communication is an invaluable tool for ensuring company stays safe, productive and in compliance.

Duct markers have a variety of text options: natural gas, radon vent, fire sprinkler water, high pressure gas, and more. Labels are built with strong adhesive backings for high durability and long-lasting performance—these labels have an outdoor lifespan of 5-7 years. They are chemical, water, and smear resistant, so you can rest assured that these labels will last. If you need to remove these markers, they’ll come up without leaving a messy residue behind.

Browse duct markers below!

Need a custom label? We’re happy to create specialized labels for your unique needs. Give us a call at 866-777-1360.

Free OSHA Label and Sign Chart

Free OSHA Label and Sign Chart

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LabelTac® 4, LabelTac® Pro X, and LabelTac® 9 are on sale through the end of May.
  • Custom Printed Pipe Marking Labels

    Pipe marking labels are a must if you have any sort of pipe work within your facility. Not only will these special labels make the contents of pipes easier to identify, but they are required by OSHA to keep your workers safe from hazardous chemicals... More details

    Custom Printed Pipe Marking Labels

    $1.70
  • Compressed Air

    Pre-Printed Compressed Air Line Marking Labels Compressed air is used at high pressures and can injure a person if her or she doesn't know the pipe's content. Use our pre-printed pipe marker and air line labels to inform workers about pipe and air line... More details

    Compressed Air

    $1.70
  • Radon Vent

    Summary Radon is a chemical element found in some buildings and in mines. OSHA, MSHA and other regulations require that all pipes to be marked, including radon vent lines. Use our pre-made labels to quickly and easily label your radon vent pipes and... More details

    Radon Vent

    $1.70
  • 2 PSI Natural Gas

    2 PSI Natural Gas Pipe Labels Factories can be dangerous, especially those using natural gas. Our 2 PSI Natural Gas pre-printed pipe labels will indicate what PSI of natural gas is in the pipe. Application is easy: simply peel and stick to a clean, dry... More details

    2 PSI Natural Gas

    $1.70
  • Natural Gas

    Summary Marking natural gas pipes is very important because a natural gas leak can lead to explosions or even illness or death from inhalation. Make it clear what pipes contain with our pre-printed pipe marking labels. Determine what size labels you... More details

    Natural Gas

    $1.70
  • 5 PSI Natural Gas

    5 PSI Natural Gas Pipe Label Factories can be dangerous, especially those using natural gas. Our pre-printed 5 PSI Natural Gas pipe marking labels will make it clear what PSI of natural gas is in the pipe. Application is simple: just peel off the... More details

    5 PSI Natural Gas

    $1.70
  • Create Custom Labels

    Every facility has unique needs when it comes to labeling. Whether it be for OSHA compliance, safety, health, informational, or organizational reasons. We know pre-made labels don’t cut it for some special projects. That’s where our team here... More details

    Create Custom Labels

    $3.90
  • Pipe Marking Arrow Tape

    108' per roll 1", 2", and 4" widths available Various base color/arrow color combinations Durable vinyl material Aggressive adhesive Clear over-lamination to protect printed surface Continuous print design All colors meet the ANSI 535.1 Safety Color... More details

    Pipe Marking Arrow Tape

    $24.95
  • Fire Sprinkler Water

    Pipe Labels: Fire Sprinkler Water Industrial facilities can be dangerous, and pipe marking labels are needed to keep employees and maintenance personnel safe. This label is for pipes containing Fire Sprinkler Water. Our pre-printed Fire Sprinkler Water... More details

    Fire Sprinkler Water

    $1.70
  • Chilled Water Return

    Pre-Printed Pipe Marking Labels: Chilled Water Return In many plants, factories, and production facilities, it is necessary to identify different water sources. This chilled water return label will display directional and source information to assist... More details

    Chilled Water Return

    $1.70
  • City Water

    City Water Pipe Marking Labels Keep employees and contractors informed of which pipe is which with one of our pre-printed pipe marking labels. These stickers indicate a pipe contains city water. Printed using our top-selling LabelTac® Industrial... More details

    City Water

    $1.70
  • High Pressure Gas

    Pipe Labels: High Pressure Gas Industrial facilities can be dangerous, but labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed High Pressure Gas labels clarify exactly what a pipe contains. Printed using our... More details

    High Pressure Gas

    $1.70
  • Chilled Water Supply

    Chilled Water Supply Pre-Printed Pipe Marking Labels In warehouses, factories, and production facilities, it is necessary to identify different water sources. This chilled water supply pipe marker will communicate source and flow direction information... More details

    Chilled Water Supply

    $1.70
  • Water

    Water Pipe Labels Some workplaces are dangerous, and these Water pipe labels will ensure people know what pipes contain so they can behave accordingly. These pre-made marking labels make it easy and cost-effective to label your pipes and stay... More details

    Water

    $1.70
  • Hot Water Supply

    Pipe Labels: Hot Water Supply Industrial facilities can be dangerous, but properly labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Hot Water Supply labels clearly indicate what a pipe contains. Printed using... More details

    Hot Water Supply

    $1.70
  • Carbon Dioxide

    Pre-Printed Brine Pipe Marking Label Manufacturing facilities produce carbon dioxide through various chemical processes, and pipes containing carbon dioxide must be labeled. Our pre-printed carbon dioxide (CO2) pipe marking label clearly identifies the... More details

    Carbon Dioxide

    $1.70
  • Air

    Pre-Printed Air Line Pipe Marking Label These air line pre-printed pipe marking labels are easy to install - simply peel and stick to clean, dry pipe surface. They are printed using the top-selling LabelTac® 4 label maker and will help you... More details

    Air

    $1.70
  • Sprinkler Fire

    Sprinkler Fire Pipe Labels These fire sprinkler labels will ensure people know what pipes contain. Printed using our top-selling LabelTac® Industrial Label Printers, these pre-made pipe marking labels make it easy and cost-effective to label... More details

    Sprinkler Fire

    $1.70
  • Cold Water

    Cold Water Pipe Marker Industrial facilities can be dangerous places, but labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Cold Water pipe marking label quickly communicates the contents of a pipe. Printed using... More details

    Cold Water

    $1.70
  • Pipe Marking Banding Tape

    108' per roll Width ranges from 1/4" to 6" Vinyl material Multiple colors and hazard patterns available Apply at room temperature Resists temperatures ranging from -20°F to 170°F Resistant to fluids and chemicals Abrasion, impact, and... More details

    Pipe Marking Banding Tape

    $5.99
  • Nitrogen

    Summary Labeling your nitrogen pipes is an easy task with our tough, pre-made pipe marking labels. They are resistant to hot/cold temperatures, chemicals, water, greases, and other industrial hazards. Once applied, they last years, even in outdoor... More details

    Nitrogen

    $1.70
  • Propane Gas

    Summary With our pre-printed Propane Gas pipe marking labels, you can quickly and easily mark your gas lines. These labels are extremely durable and are capable of withstanding application temperatures as low as -25° and as high as 210°. They... More details

    Propane Gas

    $1.70
  • Condensate

    Condensate Pipe Marking Label In any factory or manufacturing facility, it is important to know the difference between a water pipe and one used for condensates. Our pre-made pipe marking labels are printed with "condensate."  We offer lots of... More details

    Condensate

    $1.70
  • Vacuum

    Vacuum Pipe Labels Communicate to workers the location of the Vacuum pipes with these labels. Vacuum labels will ensure people know what these pipes contain. These pre-made pipe marking labels make it easy and cost-effective to label... More details

    Vacuum

    $1.70
  • Gas

    Pipe Labels: Gas Industrial facilities can be hazardous, and marking pipes is necessary to help keep employees and maintenance personnel safe. Our pre-printed gas labels quickly communicate what pipes contain. Printed using our top-selling... More details

    Gas

    $1.70
  • Oxygen

    Summary Need to label your oxygen pipes? Our pre-printed pipe marking labels make it easy to label all the pipes in your facility, including those containing oxygen. They are resistant to water and chemicals and last years, even... More details

    Oxygen

    $1.70
  • Hot Water

    Pipe Labels: Hot Water Industrial facilities can be hazardous, and properly labeling pipes can help make the work environment safer. These pre-printed Hot Water labels quickly communicate what pipes contain. Printed using our top-selling... More details

    Hot Water

    $1.70
  • Steam Supply

    Steam Supply Pipe Labels Factories and other production facilities can be hazardous places. Properly labeling pipes can help increase safety. Steam Supply pipe labels will ensure people know what these pipes contain. Printed using our top-selling... More details

    Steam Supply

    $1.70
  • Refrigerant

    Summary Refrigerant pipes (as well as all other pipes) should be labeled so people know what they contain. Our tough indoor/outdoor vinyl pipe marking labels make it easy to mark your lines with labels that last for years, even in outdoor applications... More details

    Refrigerant

    $1.70
  • Hot Water Return

    Pipe Labels: Hot Water Return Industrial facilities can be dangerous places, but properly labeling pipes can help keep employees and maintenance personnel safe. Our pre-printed Hot Water Return labels clearly specify what a pipe contains. Printed using... More details

    Hot Water Return

    $1.70
  • Potable Water

    Summary Potable water pipes (water that is suitable for consumption) must be labeled. Our pre-made labels make this easy. They are tough and last years even in outdoor applications. Once applied they are UV, water, chemical, and grease resistant... More details

    Potable Water

    $1.70
  • Glycol

    Pipe Labels: Glycol Industrial facilities can be hazardous places, and pipe marking labels are needed to help keep employees and maintenance personnel safe. Our pre-printed glycol labels will leave no doubt about what a pipe contains. Printed using our... More details

    Glycol

    $1.70
  • Non-Potable Water

    Summary Non-Potable Water lines (water that is not appropriate for consumption) should be labeled, along with other pipes in your facility, per OSHA regulations. Once applied, our pre-made pipe labels are resistant to water, chemicals, and the elements,... More details

    Non-Potable Water

    $1.70
  • Fire Damper

    Pipe Labels: Fire damper labels Industrial facilities can be dangerous, and pipe labels are needed to keep employees and maintenance personnel safe.  Our pre-printed Fire Damper labels quickly communicate what a pipe contains. Printed using our... More details

    Fire Damper

    $1.70
  • Domestic Water

    Pre-Printed Domestic Water Pipe Marking Labels If you need to mark a domestic water pipe, our pre-printed markers are great for conveying important information to employees and visitors to your facility. We make these labels with a... More details

    Domestic Water

    $1.70
  • Recirculated Hot Water

    Summary Do you have have recirculated hot water pipes that need to be labeled? Don't mess with stencils or cheap labels. Our labels are the toughest around and can withstand extreme temperatures and damage from UV rays, water, greases, and other... More details

    Recirculated Hot Water

    $1.70
  • 140 Degrees Hot Water

    140° Hot Water Pipe Label Our 140° Hot Water pipe labels inform workers of what temperature of water is in a pipe. Application is easy: simply peel and stick to a clean, dry surface. Available with left-facing arrows, right-facing... More details

    140 Degrees Hot Water

    $1.70
  • Exhaust Pipe Marker

    Pipe Markers: Exhaust Factories can be dangerous places, and pipe marking labels are required to help keep employees and maintenance personnel safe. These exhaust pipe labels will ensure that workers can quickly find out the contents of a pipe. Printed... More details

    Exhaust Pipe Marker

    $1.70
  • Fire/Smoke Damper

    Pipe Labels: Fire/Smoke Damper Industrial facilities can be hazardous places, and pipe marking labels are necessary to keep employees and maintenance personnel safe. This label is for the Fire/Smoke Damper pipes. Our pre-printed Fire/Smoke Damper... More details

    Fire/Smoke Damper

    $1.70
  • Cold Water Supply

    Cold Water Supply Pipe Marking Labels Keep everyone informed of cold water supply pipe contents with our pre-printed pipe marking labels. These stickers come pre-made with the text "Cold Water Supply," but they can also be customized. Pipe markers are... More details

    Cold Water Supply

    $1.70
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