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:
Caj. Top picture of Firestop Certification Listing Certification listings are considered public domain as access must be provided to Authorities Having Jurisdiction as well as the public for proving compliance of field installations with building codes Own Achim Hering technology PermissionOTRS Drawings of firestops CAJ