supply of non-metallic colour light signal housings of various types for railway signalling suitable forjunction route indicator unit as per spec. no. rdso/spn/194/2006 rev.2.0 or latest. 1 way (without lensee &holder) as per rdso drg. no. sa 23401 (adv.) suitable for led signal lighting unit & irs:s-66/84 and. 1 orlatest.