Peter,
BENTLEY's target is to have a 3D concept solution within the next 2-3 weeks, thereafter, we need to finalise the 3D, update 2D, upload to SAP and requote accordingly.
I anticipate k/o should be 4-6w from now. Please note it the bracket positions that shall change on the Ducts and there are no plans currently to change shape or size of the duct.
Hope this helps.