Hi,
Dt-40 Pros are made by Jian...
You could PM him at jian725 right here.
I have two DT 40 seem good but then I am only a "newbie" at this.
They have a website dragontiger just google it cant remember of its .com or something else.
Galvo base size is 40mm by 40mm unit is 65mm high
Power supply is 120 * 80mm (35mmhi)
Amps are 95 * 70mm (dont forget heatsinks)
You can see mine in pix on here under "green machine" thread. (may help with sizing layout
Cheers
Ray
NZ