<a href="https://en.wikipedia.org/wiki/en:Bathtub" class="extiw" title="w:en:Bathtub">Bathtub</a> <a href="//commons.wikimedia.org/w/index.php?title=Drain&amp;action=edit&amp;redlink=1" class="new" title="Drain (page does not exist)">Drain</a> <a href="//commons.wikimedia.org/wiki/Firestop" title="Firestop">Firestop</a>, as shown, top and bottom. This firestop consists of a <a href="//commons.wikimedia.org/wiki/Mortar_(firestop)" title="Mortar (firestop)">firestop mortar</a> on top and rockwool packing on the bottom. The drain <a href="//commons.wikimedia.org/w/index.php?title=Pipe&amp;action=edit&amp;redlink=1" class="new" title="Pipe (page does not exist)">pipe</a> is made of <a href="//commons.wikimedia.org/wiki/Copper" title="Copper">copper</a>.
<a href="//commons.wikimedia.org/wiki/User:Achim_Hering" title="User:Achim Hering">Achim Hering</a>
2006-12-01
<span class="int-own-work" lang="en">Own work</span>