What types of material are trunking generally made from?

Trunking is typically made from materials such as PVC (polyvinyl chloride), metal (like aluminum or steel), and sometimes fiberglass. PVC is popular for its lightweight, corrosion resistance, and ease of installation, while metal trunking offers durability and strength. Fiberglass may be used in environments requiring chemical resistance or additional insulation. The choice of material often depends on the specific application and environmental conditions.