Lucas Products and Services manufacture custom triangular duct labels to clearly mark large pipes. These custom duct labels come with self-adhesive backing and can be easily applied to a clean and dry surface. Our triangular duct pipe labels are resistant to temperatures from approximately -40°C to 82°C. All our duct labels are available in plain coded colours, indicating various air flow types such as hazardous air, conditioned air, cold air, dirty extract air, exhaust air, foul air and clean air, amongst others. We can also print legends on our custom triangular duct labels. Industry standard Duct Identification labels are 150mm on all sides.