9 X 25 X 1 Square Front Flange Crawlspace Exhaust Vent

https://onyxxteriors.com/info/explore/9-X-25-X-1-Square-Front-Flange-Crawlspace-Exhaust-Vent.php

A beautiful shade of Forest Green on this rectangular louver attic vent.

Get these Square crawlspace exhaust vents The front flange vents are already trimmed out as a finished product.

With mitered corners, there is no need to fight with wooden trim to cover.