XXL Stainless Steel Litter Box with Lid, 28" Lx20 W Extra Large Cat Litter Boxes for Big Cats, Jumbo Metal Litter Box with Footboard & Scoop,Anti-Leakage,Non-Sticky,Odorless,Easy to Clean

I got one that really surprised me with its size. It's huge. https://www.amazon.com/dp/B0FNRMBFWP I have some very big cats, too, and it is plenty of space for them! Like way bigger even than the big plastic boxes from petsmart.