Will BISSA Shoe cabinet with 3 compartments, white, 19 1/4x11x53 1/8 " fit in a Skoda Fabia 2023?

The Fabia gives you a wide mouth for a small car: 39⅜″ across and 32¼″ tall, a touch wider than the 36⅝″ of floor between the wheel arches behind it. With the rear seats up the floor is short at 29⅛″, enough for groceries and compact boxes; fold the bench and it opens out to 55½″, a gain of 26⅜″ that makes real flat-pack runs possible. You load over a 26¾″ liftover with a 7½″ drop down to the floor, so you lower cargo in rather than slide it straight through. Long rigid boxes fail at the opening first, so check your longest box against that, and ease heavy items down past the drop.

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.