3M™ Heavy Wall Tubing is designed to provide reliable performance as well as excellent mechanical and environmental protection. It is flame retardant and UV resistant, and offers easy handling and installation.
Our pillows intumesces (expands) and locks itself into place, completely surrounding the penetrant(s) stopping smoke, fire and toxic gases from spreading to the next room or next floor for the rated time period. They are easy to install and great for retrofit project.