First-in type For groove width 8mm Recommended tightening torque: 13N・m (133kgf・cm) A hole (M4) for attaching acrylic panels etc. is located on the side of the cover (one side) Width (mm): 25 Height (mm): 55 Length (mm): 55 Interface宽度(mm):1.5至4.5 螺钉尺寸:M8 x 20 深度(mm):39 侧孔直径:M4 兼容凹槽宽度(mm):8