Rinnai 224270 39-Inch Metal Vent Pipe Extension<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>GSA Approved</li><li>Compatible With All Indoor Rinnai Water Heater Models EXCEPT The R98 Series</li><li>Zero Clearance To Combustibles</li><li>Elbow May Be Required For Venting Applications</li><li>Professional Installation Recommended</li></ul></div><img src="http://ecx.images-amazon.com/images/I/216aFEfBWWL.jpg" noproxy>