An enclosed litter tray has several different spaces to check: the opening, the route through it and the area inside. The Gentleman's Abode lists a 20cm entry opening alongside overall dimensions of 50 × 50 × 53cm. Start with that entry measurement when deciding what further information you need.
For a large cat, a product name or an exterior globe shape cannot establish comfortable access. Nor can a single opening figure tell you everything about the approach. You need to understand what was measured and what surrounds it before comparing it with your cat's current tray.
Ask what the 20cm measurement represents
Request a clear, straight-on entry photograph or dimensioned drawing. Ask whether 20cm is the clear opening at its narrowest usable point, and whether any lip or surrounding frame reduces the route through. The listing supplies an entry figure; it does not describe every detail of that measurement.
Ask for the entry height above the floor as a separate dimension. A doorway can appear broad enough in a photograph while its threshold presents a different access question. Compare both details with a tray your cat already enters comfortably rather than treating breed or weight as a complete answer.
If you draw the entry outline on paper to understand its size, use it only as a visual reference. Do not try to push or coax your cat through a homemade test opening. Record observations of familiar equipment and ask for missing product measurements instead.
Follow the route beyond the opening
Request usable interior dimensions and consider how your cat would enter, turn and dig. Overall height and width include the enclosure. They do not establish the floor area available after the internal structure and litter are taken into account.
The external approach deserves attention as well. A nearby cabinet or wall should not make the cat immediately turn sharply into the entrance. Include that approach in your room sketch and check it with furniture and room doors in their normal positions.
For a broader comparison, see how to assess litter tray size. Before purchasing the Gentleman's Abode, also confirm the manufacturer's age, weight and litter requirements for automatic operation. A useful fit decision brings these checks together; the listed 20cm opening is the starting question, rather than the complete answer.
