Extra High Litter Tray Georplast Colosseo, 56 x 40 x 30 It is surprisingly wide and roomy, making it comfortable even for big cats. In addition to the standard items on the market, the litter tray features an extra high tray and extra high panels. Litter and urine do not spill onto the floor thanks to the high panels. For cats that urinate without squatting, it is very helpful.