Remove Dust Up and Out Of the Way. Connects directly to SawStop's dust collection blade guard. Fits all SawStop T-Glide rail systems. Custom Y-Port unites above and below-table dust collection into one 4" port. Compatible with all SawStop Cast Iron saws (JSS not included). Not compatible with Contractor Saw 30" rail kit CNS-SFA. Requires dust collection blade guard TSG-DC.