supply of supply of non-metallic (frp) colour light signal housing multi-unit type for rly. signalling suitable for re area 4 aspect complete without lenses, l s and signal transformer--------------- , supply of non-metallic (frp) colour light signal housing multi-unit type for rly. signalling suit able for re area 4 aspect complete without lenses, lamps and signal transformer as per drg no sa 23001/ a/m(adv), alt. 8 and as per spec no. rdso/spn/194/2006 (ver1.0) or latest. frp material as per rdso s pec no rdso/spn/151/1997 or latest. all drawings should be as per latest. note: signal unit should be com patible to led type. [ warranty period: 30 months after the date of delivery ] ]