 
Narrow gauge insulated vans, which were obtained from the Queensland Railways, classified "NIS" and allocated road numbers 346 through 347. Both entered service on the North Australia Railway.
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| 346 | 347 | 
 
Insulated van obtained from the Queensland Railways.
| - | Classified on the North Australia Railway as a "NIS" Insulated van. | 
| 6.1924 | On North Australia Railway register as "NIS" insulated van. | 
| 2.5.1951 | Inventry show wagon "NIS 346" as being converted to "NFS 346". | 
Insulated van obtained from the Queensland Railways.
| - | Classified on the North Australia Railway as a "NIS" Insulated van. | 
| 6.1924 | On North Australia Railway register as "NIS" insulated van. |