PETKIT Cat Litter Ramp for The PuraX, PuraMax, PuraMax 2 and Purobot Pro Max Self-Cleaning Cat Litter Box Cat Stairs for PETKIT Cat Litter Boxes: This cat litter trapper is a solid step for your pets, makes it easier for your cats to get in and out of the litter box, perfectly for the PETKIT PuraX, PuraMax, PuraMax 2 and Purobot Pro Max automatic cat litter box. It's not very suitable for the Purobot Ultra litter box. Ramp Design: With a height of 3.9 inch to 5.3 inch which is specially comfortable and easy for kittens, senior cat ,short-legged and elderly cats. Furthermore, this cat step stair is made of ABS plastic material, smooth and difficult to deformation, it can be a bed for cats to lay on it. Keep Floor Clean and Tidy: The strip grid design effectively gathers the litter from the cat's paws and prevents the litter from scattering. If you want to recycle the cat litter, just lift the cover and dump the litter back into the litter box. It helps you to get back a clean and tidy home. Large Capacity: Can hold more litter than traditional cat litter mat, cleaning interval is up to several weeks. Non-Slip Design: It comes with 4 non-skid buttom pads to prevent the trapper from sliding on the floor. Dimension: Length 16.3 inch, width 19.6 inch, height 3.9 to 5.3 inch.