Case Total Length: Inner Diameter: 39.76" / 101cm, Outer Diameter: 41.34" / 105cm Case Total Width: Inner Diameter: 12.99" / 33cm, Outer Diameter: 14.17" / 36cm Neck Length: Inner Diameter: 21.06" / 53.5cm, Outer Diameter: 21.65" / 55cm Lower Case Length: Inner Diameter: 18.7" / 47.5cm, Outer Diameter: 19.69" / 50cm Upper Cover Depth: Inner Diameter: 1.57" / 4cm Lower Cover Depth: Inner Diameter: 2.17" / 5.5cm