The Polestar subZero, produced by Michaud Industries, represented a type of Blaster radiators intended for use in spaceships. A maximum of three Polestar subZero units could be combined to create a highly effective heat dissipation setup for a vessel's blasters. It was possible to acquire a single radiator of this type on the distant planet of Tatooine sometime prior to the Boonta Eve Classic podrace event held in 32 BBY.