Me too.Don,
The dust port is approx. 1 1/2 inches. I use a Bosch VAC005 5-Meter Vacuum Hose 35mm that I purchased on Amazon. 35mm is 1 1/2 inches. The tool end of the hose is flexible rubber and starts at 1 3/8", tapers to 1 1/2" and fits the Triton perfectly.
Rich
....from the manual.....The Triton Router is equipped with a Dust
Port (20) for chip extraction above the cut.
It accepts 38mm (1½") O.D. hose, supplied
with the Triton Dust Collector (DCA300).