... : 16*16, 25*25, 25*40,50x50, cable trunking accessories , inner trunking , "T" SHAPE Channel ,angle bend, outter bend ... sizes: 20*10 , 24*24, 39*19 cable accesories16*16 ... no suffer from biotic attack11) Protects wire and cable from easy damage12) Installation during the process of ... or general service box 2011 good quality cable trunking