Vent fitting for side of 10 inch round ductwork

[Stephen Tashiro]

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.

[Malcolm McLeod]

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

[Paul F Franklin]

These are kind of pricey, but they are a curved vent that inserts directly into the duct: https://advantage-supply.com/products/iera-matte-black?variant=42321785258239