Will BISSA Shoe cabinet with 3 compartments, white, 19 1/4x11x53 1/8 " fit in a Citroen C3 Aircross 2019?

The C3 Aircross trunk is short on floor and generous on height. The mouth measures 39⅜″ wide by 34¼″ tall, taller than most small SUVs offer, while the seats-up floor is only 28¾″ deep. Fold the bench and the floor grows to 56¼″, a gain of 27½″ that turns a grocery trunk into a usable flat-pack space. Width between the arches is 37⅜″, and the sill sits 27½″ up with a 4⅜″ drop inside. Tall boxes ride upright here better than in rival crossovers; long boxes need the seats down every time. Slide heavy loads over the sill instead of lifting them clear.

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.