This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Cu pipe leonard. Copper piping system in building with intumescent firestop being installed by an insulator Vancouver British Columbia Canada Own Achim Hering Firestops Firestop installation equipment Operable firestops Plumbing Caulking Concrete blocks Structural steel Firestops being installed Intumescents Copper pipes