What must be secured in place when a vent passes through attic space to prevent displacement?

When a vent passes through attic space, it is crucial to have proper insulation shields in place to prevent displacement. An insulation shield serves the purpose of providing a barrier that keeps insulation from coming into direct contact with the vent. This is important because insulation can get compressed or displaced due to the heat generated by the vent, which could lead to reduced efficiency and potential hazards such as fire risks. The shield helps maintain the proper clearance required by code and ensures that the vent can function correctly without interference from the surrounding insulation material. This not only maintains system performance but also enhances safety within the attic space.

While aspects like support brackets might help in securing the vent position, they do not specifically address the need to manage thermal insulation around the vent as effectively as insulation shields do.