speaker parts:Effective Height: 61
Overall Height:89
Diameter of Mounting: 245
Outer Dia: 256,Center Hole:68

speaker frame

Features: 1) Material: 0.5 to 1.0;

               2) Sizes: 3 '' to 15 '';

               3) Available treatment: Zinc plating, spray chrome, painting, spray plastic, electrophoresis