supply of 1 ( one ) way non-metallic frp type junction type route indicator as per rdso drawing no. sa - 23401 ( adv ) alt - 21 ( one ) way non-metallic frp type junction type route indicator as per rdso drawing no. sa - 23401 ( adv ) alt - 2,1 ( one ) way non-metallic frp type junction type route indicator as per rdso drawing no. s a - 23401 ( adv ) alt - 2 for railway signalling suitable for re area without lamp, lenses and signal transfor mer as per rdso specification no. rdso/spn/194/2006 (rev.2.0). frp material as per rdso specification n o. rdso/spn/151/1997. [ warranty period: 30 months after the date of delivery ] ]