SawStop Over-Arm Dust Collection Assembly an easy and reliable solution for managing dust in your workshop. Designed to connect directly to SawStop’s dust collection blade guard, this assembly features a custom rubberized Y-Port that combines dust collection from above and below the table into a single 4-inch port. It is compatible with all SawStop Cast Iron saws, excluding the JSS model, and works with most SawStop ICS, PCS, and CNS model saw configurations. Please note that it is not compatible with the SawStop Contractor Saw 30-inch Rail Kit (CNS-SFA). For optimal performance, this Dust Collection Assembly requires the SawStop TSG-DC Dust Collection Blade Guard. Model Number: TSA-ODC