|The right hand table saw is set up for dado and rabbets exclusively. It has a "sacrificial fence" as Norm likes to call them. This set-up uses 2 additional tables, no saw under, for the added width and 1 grid extension. Both fences use the same rail. Dust ports underneath are 4" and I switch which I switch saws with a quick disconnect fitting I made from existing DC fittings since 4" is not all the same in DC fittings and in PVC fittings.