Petmate Basic Open Top Cat Litter Pan Plastic Cat Litter Box Jumbo Grey - Help your cat love their litter box with Petmate s? Basic Litter Box. Petmate s Basic Litter Box is available in sizes ranging from small to jumbo. Ideal for cats who hate being enclosed in small spaces. The jumbo open-top design has low; rimmed sides; and the wide profile base helps prevent unwanted spills and litter scattering outside of the box. Petmate s exclusive design-breaking pattern improves structural stability for added strength and durability. Place anywhere in the home with easy access from any side. Made with eco-friendly plastic in the USA.