[Compatibility] ONLY Compatible with All PetSafe ScoopFree Automatic Self Cleaning Litter Boxes. These are PET STANDARD branded trays and are not created or sold by PetSafe. [Compatible Tray] Length is about 22 inch. Width is about 14.75 inch. Height is about 2.5 inch. [Premium Quality] Easy to clean with our durable plastic and smooth rounded corners and edges. [Perfect Seal] Lock the smells inside by securing the shield to the ScoopFree waste trap. The Stainless-steel magnets on the waste shield won't rust. [Friendly Customer Service] Please feel free to contact us if you have any questions about our products, we'd like to help you!