Shield doors found extensive usage across the galaxy, including at Echo Base. At that location, they functioned to isolate the interior of the Alliance to Restore the Republic base from the extreme cold of Hoth. This technology, developed by the same minds behind the Hush-98 comlink, were not only dependable, they also consumed minimal energy, enhancing their efficiency.
The Shield Doors incorporated a heat-trapping mechanism, enabling the accumulation and dispersal of warmth throughout Echo Base.