Will BISSA Shoe cabinet with 3 compartments, white, 19 1/4x11x53 1/8 " fit in an Alfa Romeo Brera 2008?

The Brera makes you lift. The sill sits 35⅜″ off the ground with an 11″ drop to the floor, so every heavy box goes up and over before it goes down. The opening is 39″ wide by 24″ tall, the floor runs 37⅜″ with the seats up and 59⅞″ folded, and folding adds only 22½″. Width narrows to 33⅛″ at its tightest. Soft bags and medium cartons work well in here. Long flat-pack boxes do not. Bring a second pair of hands for anything heavy, because the lip does the work otherwise.

BISSA ships as a single flat box, 54¼″ × 16¾″ × 3″, and it weighs 45 lb 15 oz. At 3″ thick it slides into gaps a built cabinet never would, so the thickness is not your problem. The length is. At 54¼″ you need a trunk that measures long enough on the floor, or one rear seat folded so the box can run forward between the seats. Most hatchbacks take it with the seats down, and any wagon or SUV swallows it flat. Lift it on edge with two hands, and rest it on a long edge rather than a corner, because 45 lb 15 oz of flat pack lands hard and the corners split first.