Vent fitting for side of 10 inch round ductwork

Is there a standard fitting for an outlet vent on 10 inch round heating duct when the duct is in a narrow passage and the vent must vent out the side of the passage?

I could fabricate a box shaped chamber with the vent on the side. However, I'm curious whether there are ready made fittings that serve this purpose.

Might be what you’re looking for? ….”Duct Saddle Tap”

These are kind of pricey, but they are a curved vent that inserts directly into the duct: https://advantage-supply.com/product...42321785258239