The TVH.E137 extension kit consists of a diverter handle extension. This extension is to be used with the Isenberg TVH.4371 or TVH.4511 valves. It is used when the valve is installed too deep into the wall and the handles need to be extended out further. The extension measures 1.4” in length. A separate finish cover may be needed [not included] to cover the exposed brass part of the extension on the diverter handle. The part number of this finish cover is the TRM.TVH.0211** where ** denotes the appropriate finish.