Hey I made this modular vent pipey system thingo for you guys to add some industrial clutter to your environments. There are two versions using the same design, one fat and one skinny. They both have some different corner options and a grill model to block off the ends. To keep them lined up in the editor, keep the rotation mode on 'local' and the snap to settings on 0.1 units (10cm snap grid). The material is bumped specular with a baked normal map. Enjoy!