Three cattle vans constructed by the Railway Company in-house in their works at Douglas Station in 1908, all re-using the frames from two-plan drop-side wagons which had been inherited via the Manx Northern Railway from the Isle Of Man Mining Co., Ltd.  K.10 was built without a roof and used the underframes ex-M.45, being roofed in 1916 and scrapped in 1947.  K.11 was also constructed without a roof using the frames e-M.43 and was roofed in 1916 and scrapped in 1946; the final examples K.12 was constructed on the underframes of M.44, roofed in 1916  and scrapped in 1960.