1. 尺寸：Outer dimensions (top cover): 225 x 175 mm,；Height over table top: 19 mm；Base frame depth: 26 mm；Minimum table top thickness 20 mm: (avoids screw tip on table top bottom side),；26 mm (avoids base frame deeper than table top bottom)

2. 重量：Top frame 50g, bottom frame 90g

3. 颜色：Black. Other colors possible on request