<a href="//commons.wikimedia.org/wiki/Fire_test" title="Fire test">Fire test</a> preparation leading to <a href="https://en.wikipedia.org/wiki/en:Certification_listing#5._Fill.2C_Void_or_Cavity_Materials.2A_-_Caulk_-_.28Not_Shown.29" class="extiw" title="w:en:Certification listing">UL certification listing C-AJ-8073</a> for a <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">firestop</a>.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2007-06-25
<span class="int-own-work" lang="en">Own work</span>