Terrible assembly instructions but got it done and together.  The smaller door is very narrow.  Waste of space really.  Maybe some cat toys, but nothing more.  It would have been useful to make that top exit shelf a grate to trap litter that you could just slide out.  It gets quite messy with tracked litter and is a pain to clean out because of the small area.  Otherwise, hides the litter box nicely.  ***update*** This has not held up for very long.  Within a month the laminate was peeling off at the door and one cat mishap and the particle board is destroyed.