Reinforcing and Dampers Reinforcing Reinforcing and dampers are easy with Vulcan software. Add reinforcing automatically according to your shop's standards as you input each fitting, so you can see the reinforcing displayed in the preview window. Make changes on the fly and see them displayed instantly. If you need to add/remove reinforcing for a special situation, overriding the automatically produced reinforcing is simple. It's so easy, if a blank has a hole put a rod in it.   Dampers Dampers can be entered stand alone or included in duct or increase takeoff fittings. You can make the damper a different gauge than the duct. You can also construct a damper using a hat channel. Vulcan allows you to cut the holes for the damper.