HD10RH 6 horizontal slot case with sheet music compartment. This case is the same as the HD10 except that the slots, instead of running front to back, run side to side. The result is that the slots will take an alto recorder in one piece, or the middle joint of a bass recorder. This case will take all sizes of recorders from sopranino to bass and the flexible channel dividers mean it will also hold knick basses, or music stands, with ease. (23”x 16”x 4”)