From Starbounder - Starbound Wiki
It prevents any food item placed inside it from spoiling.
It can be placed on any flat surface 3 blocks wide and requires 2 blocks of free vertical space. It provides a 3-block platform.
|Apex :||A mini fridge. Hopefully it contains banana milkshake.|
|Avian :||A mini fridge. Ideally filled with drinks and snacks.|
|Floran :||Floran can sssmell meat. Maybe meat inssside?|
|Glitch :||Pleased. This mini fridge is operating at the optimal temperature.|
|Human :||I'm salivating with excitement thinking about the possible contents.|
|Hylotl :||Underwater, refrigeration is easier. These devices are a clever substitute.|
|Novakid :||A small fridge.|