Super heavy duty track ADC Model 283-R employ No. 2863-A 8" Live End Pulleys, No. 2864-A 8" Dead End Pulleys and No. 2866-A 8" Adjustable Floor Pulleys which combined with the No. 2830 1/2" Sash Cord reduce operating effort on systems with heavy curtains. 

Model 283-R Silent Steel track is equipped with No. 2849 Neoprene Ball-Bearing Single Carriers and No. 2850 Neoprene Ball-Bearing Master Carriers. This track system can be used to cover very long runs and can handle heavy multi-layered curtains.