Will VITTSJÖ Shelf unit, black-brown/glass, 39 3/8x68 7/8 " fit in a Honda Civic 2022?

The Civic gives you a boot that is wider than it is tall, 37¾″ across the opening and 29½″ high. Seats up you get 36¼″ of floor, which suits suitcases, boxes and a weekly shop without much fuss. Drop the rear bench and the floor stretches to 70⅞″, a gain of 34⅝″, enough for longer flat-pack cartons loaded through the cabin. The narrow point of the floor is 34¼″, so very wide boxes catch before they are fully in. The sill sits 26⅜″ off the ground with a small 6¼″ drop, so lift, do not drag.

VITTSJÖ ships as one long, flat carton, 79¼″ × 15¼″ × 3½″ and 60 lb 12 oz. The length is the awkward part: a rigid flat-pack just under 80 inches that will not bend around a tight boot mouth, and there is glass inside, so the box does not forgive a hard knock. A car that takes it easily is an estate, an SUV, or a hatchback with the rear seats folded flat. In anything smaller, load it diagonally from a folded seat back toward the boot, longest edge leading, and rest it on a blanket. Keep it printed side up so the glass shelves stay flat, and slide it in rather than drop it.