The Lian Li O11 Vision Compact (and also the O11 Vision) offers sufficient options for the installation of fans and radiators.

### Fan capacity
- The case supports up to 11 fans, depending on the configuration.

### NZXT Kraken integration
- If you install an NZXT Kraken AIO solution with three fans, these will take up three fan slots.

### Additional fans
- To fill all available fan slots, you would need 8 more fans (11 in total - 3 NZXT Kraken fans).

### Fan size
- The fan slots in the O11 Vision Compact are designed for different fan sizes, but 120mm and 140mm fans are most commonly used. There are also options for 360mm radiators, which can also be equipped with corresponding fans.

Typically, 120mm fans would be a good choice to fill the remaining slots as these are the most flexible fit in the various mounting options of the case.