If you use the osVAC system, have a look at the similar osVAC compatible vacuum adapter I made that you can use to connect your DeWalt table saw to the osVAC system here:
https://www.printables.com/model/1031298-osvac-adapter-for-dewalt-dwe-7492-table-saw
Simple vacuum adapter for the DeWalt DWE 7492 table saw to connect it to a Makita shop vacuum cleaner. On the Makita vacuum cleaner, you need to use the large endpiece for the hose (38 mm inner diameter).
I have created the model in FreeCAD, but Printables does not seem to support the native file format of FreeCAD, so I cannot provide you with the original file :(
I believe you should be able to print it either way with the wide or narrow opening touching the bottom. I printed it with the wide opening facing the bottom.
The author marked this model as their own original creation.