Rinnai 224052 Vent Pipe Extension， 19-1/2-Inch<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>19-1/2-Inch length</li><li>Zero clearance to combustibles</li><li>Rinnai lsi and rci series tankless water heaters</li><li>Easy assembly</li><li>3-Inch - 5-Inch concentric</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31pcguOb0zL.jpg" noproxy>