Broan 509S Through-Wall Fan with Integral Rotary Switch， 8-Inch 180 CFM 6.5 Sones</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>N/A</li><li>Imported</li><li>180 CFM 6.5 Sones</li><li>Includes on/off rotary switch - no wall switch to wire</li><li>Housing adjusts to fit walls from 4-1/2-Inch to 9-1/2 thick and has a 8-3/8-Inch diameter sleeve</li><li>Specially designed polymeric fan blade</li><li>Built in damper minimizes back drafts for energy efficiency</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/414M4QB24SL.jpg' noproxy></br>