The windchests that carry the main portion of the pipework in a given rank - the remainder being carried on offnote chests. Most manual chests are 88 inches long, and between 4 1/2 and 11 inches wide per rank. On Wurlitzers, the manual chests are grouped so that one chest may contain as many as eight ranks; these chests can form very large assemblies up to several feet wide. On other makes, there is usually one chest per rank.
Also known as 'Unit chests' (Compton terminology).
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