... Big overflow pipe Wire activated dual flush toilet valve-- KB201• Full & half flush; • Dual push button Dia.38mm and Dia.16mm for option with adapter ring• ... and down( half/full window)• Flush outlet Dia. 2" for 1-pc toilet or 2-pc toilet• Silicon seal is free from ... & Free Sample for Design & Test11,CertificationJC987,CSC,UPC,CSA,CE,SASO, NF, AS, WRAS, CE, NOM Wire activated dual flush mechanism