Horizontal Portable Air Conditioners (?)

Hey all — I’m trying to solve a weird space constraint and hoping someone’s seen a product that fits.

We need a portable air conditioner that can sit flat / horizontal (or at least be very low-profile) because the only viable spot is on top of a fridge, and we’ve only got ~500mm vertical clearance to work with.

Space is only 15 square meters, so we don’t need a huge unit.

Problem: every “portable AC” I can find is a tall upright unit (700–900mm+), and even compact ones are still too high. A window unit also isn’t straightforward for us.