5 metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 5 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...

10 metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 10 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...

20metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 20 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...

30 metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 30 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...

40 metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 40 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...

50 metres Z gauge underlay is 0.8mm thick x 16mm wide The price shown is for a 50 metre roll, A trial sample pack is available in the categories menu, this includes enough underlay and ballast to evaluate...