Quote:

How did you mount the "restrictions"? Weld them in?



No I just bent the louvers in or out slightly in the spots where I wanted them to stay.

With the big washers, I bent the louvers out a bit. The taper of the outer wall keeps them tight against the bent-out louvers.

With the freeze plugs, I bent the louvers in on both sides of them till they were tight.

...hope that makes sense.

Jon