CABLE TRAY: Supply and erection of MS perforated cable tray with DA gray paint on the existing surface with the help of MS angle iron support (to be painted with approved paint) of size 50mm x 50mm x 6mm thick to be fixed with fastners/ nut & bolts etc. complete in all respect as desired by the Engineer-in-charge as per PWD General Specifications 2010. MS perforated cable tray size 300mm x 50mm x 50mm (2mm thick)