This is also why the Trader Joe’s freezer/refrigerator section is designed the way it is. Turns out that a chest freezer/refrigerator with no top on it at all isn’t that much worse than a standing freezer/refrigerator with a door that gets opened and closed over and over again.
Most normal supermarkets in Europe either have upright doors (more common if space is limited) or open chests. The open chests are covered when the shop is closed.
The budget supermarkets tend to have chests with a transparent sliding door on top.
In germany the sliding top door is standard in almost all supermarkets, ranging from ALDI to Edeka, it covers "normal" and "budget" supermarkets. The only places I see non-transparent doors is bulk supermarkets.
