I am considering a Fishmaster Folding T-Top for my centre console boat in Australia. It has a 120cm (48 inch) wide centre console. I am assuming that this still works with this product because you install the legs/uprights first and then just sit the canopy frame into the cradles at the top of the legs/uprights?

Thisd is correct. Our t-tops can adjust from 24'' to 50''. As long as the console of your boat will fit within this range, and your boat has a flat floor, our Pro Series or Original t-top would work for you. ** If you have a side console door, please reference the dimensions on our website under each product to make sure the crossmember will not interfere with your door opening.