Its 48 x 22 wide 18 tall. Chamber 2 will be mostly empty. So about 70 gallons.
The stand support is 1 1/2 " steel tube. It is 48 x 22.
I can put some 2x4 wood blocks under it also, as it sits on a hard wood floor
The baffles are all well bonded, to 3/8" acrylic bottom.
The stand is level and perfectly flat.
I can really use the extra inch that a plywood top would use up.

I will be splitting the 1 1/2" to leave room for my sump doors, to mount flush, they are 3/4". I can use thinner covers.