The Nelson-Wiggen 4X, with its 28-note xylophone, banjo attachment,
snare drum, and triangle, is 5'2" tall.

The 5X, with its 22-note marimba, banjo attachment, snare drum, and
triangle, is 5'10", in the same cabinet as a Style 6.  (There are
slight variations in size of Styles 6 and 8, so there could also be
slightly different 4Xs and 5Xs as well.)

Art Reblitz