Over 6000 U and K wagons
were built from 1921 to 1946. The U had underfloor hopper
outlets, the K had a plain floor. Various sub-classes were
modified from the basic wagons: KH (four hoppers only), KF
flat wagons, RU (new build wheat hoppers to same basic
design); UT (coal wagons for rotary tippler) and others. They
remained in traffic until the 1970s and form an essential part
of any mid-20th century NSWGR model scene.
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