I have a 3/4hp Dust Right dust collector from Rockler and the Oneida Super Dust Deputy. I previously plumbed the intake to my table saw, but wanted an aux connection for a hose I can use more flexibly with other tools. The Dust Right came with a wye connector that went from the 6 inch inlet of the collector and split into 2x4 inch pipes.
Unfortunately the SDD inlet is a 5 inch opening, so it does not fit OOTB.
This model is a tight fitting ring that spans that gap perfectly and provides a fairly good air seal as is. The beveled edges allow for easy installation and a tight fit to the SDD. I added metal duct tape to complete the seal.
I missed getting a picture of the adapter itself before sealing it up, sorry ;)
The author marked this model as their own original creation.