Need some help. Pop'n Stage bracket dimensions.

I bought a Pop'n Stage but it's missing the brackets that hold the pads together. I have a place that will cut them to the dimensions... problem is I don't know the dimensions. So if someone could post the Highth Width Depth (thickness) and size and spacing of the holes (for BOTH please!) I would be more than greatful. Screw size for those bracket holes would be really helpful as well.

I don't have the machine yet by the way which is why I can't measure myself I would like to have the brackets by the time it comes.