18 X 18 X 1 Round Front Flange Louvered Loft Vent

https://onyxxteriors.com/info/explore/e-custom-round-louver-vent-18x18x1-front-flange.php

With a flat 2 1/2 inch face trim...

1 1/2 inches of that is coverage as a nail fin.

Design a custom Round Louver Vent from scratch.

From this angle, the louver strength is very visible.

Being so thin at a 1 inch depth,

the install possibilities are endless.

Norandex Sandy Beige color.

Apply the wall cladding and then this circular vent to finish the job.

From this angle, the 1 inch depth speaks for itself.

The front flange will sit flat against the gable wall neatly.