Speedi-Products BV-A45 03 3-Inch B-Vent 45 Degree Round Adjustable Elbow</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>1 inch minimum clearance from combustible materials</li><li>Use with gas or propane burning appliances only</li><li>Maximum temperature of flue gas 470 degrees F</li><li>Use with factory supports and fire stop spacers</li><li>UL listed</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41gMKNzRE%2BL.jpg' noproxy></br>