These cat litter trays are supplied with a tray, a sieve and a scoop.  The tray is approx 37 x 27 x 6 cm and the scoop is approx 23 x 10.5cm.  The sieve can be removed is you prefer but can assist in making your litter last longer by sifting out the solids in between litter changes.  I would recommend this litter tray for smaller breeds of cats only and it would probably only service 1 cat without having to change the litter too often.