Will STRANDMON Wing chair, Nordvalla dark gray fit in a Citroen Berlingo 2018?

Tall boxes suit the Citroen Berlingo 2018 boot. The opening is 39⅜″ high and 47¼″ wide, the same width as the floor at its narrowest, and the floor runs level with the loading sill. So a box under 39⅜″ tall never has to be laid down to get in. A long one may still have to sit at an angle across the floor. With the rear seats up you get 39″ of floor, enough for a few boxes next to each other. Laid flat lengthways, a box longer than 39″ needs the seats folded: that gives you 69¼″, a gain of 30¼″. Load the heaviest box first, over the 22½″ sill, and push it up against the seat backs.

At 42½″ × 30½″ × 20″, the STRANDMON wing chair box is a bulky block rather than a flat pack, and it weighs 66 lb 8 oz. That bulk works against you: you cannot get your arms around it or hold it close while you walk. Lying flat, it needs 20″ of height and a patch of boot floor 42½″ by 30½″, with the long side either along the boot or across it. Make it a two-person job: take one side each, hands under the bottom edges, and lift and lower it together, so it never drops onto a corner.