poorly made but tray large
we had same issue as other reviewers - the door wouldn't fit properly or swing. the clips on the side kept popping off. we tried using it with the lid and without the clips but it frightened the cats if they moved the lid by accident. the sieve didn't work very well with either of the litters we use - super benek corn cat and cats best original.
but, once you've completely given up on the lid and the seive, the open trays are fairly large.