What are the dimensions of a CMK-3 Keyboard stack?

Single: (w x h x d): 35 1/2" (90.2 cm) x 10" (25.4 cm) x 2.8" (7.1 cm)

2-Stack: (w x h x d): 35 1/2" (90.2 cm) x 18" (45 cm) x 7" (17.8 cm)

3-Stack: (w x h x d): 35 1/2" (90.2 cm) x 22" (55.9 cm) x 8 1/2" (21.6 cm)

4-Stack (w x h x d): 35 1/2" (90.2 cm) x 25" (63.5 cm) x 11" (27.94 cm)