Really handy project box thats a suitable size for many Arduino type projects. A perfect match for a XINO/Arduino and ProtoX. The Ardunio shape board fits nicely inside with a few mm space all the way round. Extremly strong construction (we stood 13 stone on top of one) wall thickness is around 3mm.

• Useful 10mm hole in one side (as shown in picture) for cable entry etc. 
  
  
• External dimensions 88mm long, 68mm wide, 33mm deep. Side tabs add an additional 9.5mm each end, to the length.
  
  
• Internal dimensions 81mm long, 61mm wide, 27mm deep.
  
  
• Enough room to install many shields eg a XINO and an Xbee Shield will happily fit. Tall boards like the PWM sheild and relay shield are too tall.