Spherical Coordinates Box

I made this model to show how a "box" in spherical coordinates appears, for my courses in multivariable calculus.  If r is the radius, s is the longitudinal angle, and t is the latitudinal angle, measured starting at the z-axis, then the bounds for this box are 2≤r≤6, 0≤s≤2π/3, π/12≤t≤7π/12.