Flusso PBV.2100E 0.8" Extension Kit - For Use with PBV.1005A Pressure Balance ValveThe PBV. 2100E extension kit is to be used with the Flusso PBV1005A and PBV1005AS 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 0. 8 in length. Collection Universal Fixtures Style Contemporary Modern Warranty Limited Lifetime Warranty. See Warranty page for complete details. Features: Solid Brass Construction For Use with Pressure Balance Valve PBV1005A