We just completed this architectural model of an office building. The dimensions are 25.4 x 20.1 x 38.1 cm. It took up nearly the entire build envelope of the ProJet 660Pro.
If you're interested, click here to view all of the specs on the model.
Front View
Attachment 1351
Side View
Attachment 1352
Detailed View
Attachment 1353
Model Before Cleaning and Infiltration
Attachment 1354
Penny for Scale:
Attachment 1357