Color coded self adhesive duct markers include a die cut or detachable directional arrow. Brimar advises the application of markers near points where ducts enter into concealed spaces and at maximum intervals of 50 feet in each space where ducts are exposed or concealed by removable ceiling system. Color classification for duct markers is as follows:
Green for cold-air supply ducts
Yellow for hot-air supply ducts
Blue for exhaust-, outside-, relief-, return-, and mixed-air ducts.
Markers are available in 2 sizes: DMS-16 x 2-1/4" and DML-24" x 4"

Custom Duct Markers are easy to design online and give you the exact wording you are looking for. Although we have a large inventory of stock duct markers, sometimes you need the wording to be slightly non-standard on your duct marker. These are easy to apply adhesive backed markers that include your custom wording plus an arrow in your choice of 3 different color combinations.

Are an easy to handle, lower cost alternative to individual duct markers. Each roll contains 50 markers and 50 arrows; arrows will detach separately for easy identification of the duct system directional flow. Markers are suitable for ducts up to 24".
Durability: 4 to 5 years Mid Continental US
Service Temp: -20 to 200° F (-29° C to 93° C)
Minimum Application Temp: 50° F
Surface Prep: Clean & Dry