The Arctic Liquid Freezer III 360 A-RGB (White) may not be compatible with the NZXT H6 Flow RGB case due to the radiator thickness. The Liquid Freezer III 360 has a radiator thickness of 38mm, while the NZXT H6 Flow RGB case has a maximum top radiator thickness limit of 30mm.

Therefore, it is unlikely that you can install this cooler in the NZXT H6 Flow RGB case without modifications or potential issues with the fit.