Shield door

Shield doors were employed at Echo Base to seal the interior of the Alliance to Restore the Republic base from Hoth's sub-zero temperatures. Shield doors were used widely throughout the galaxy. Created by the inventors of the Hush-98 comlink, this technology was reliable, and took up very little amounts of energy to run, making it very efficient.
The Shield Doors used a thermal-capturing technology that allowed heat to be built up and distributed throughout Echo Base.
==Appearances==
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*Star Wars (1977) 39 
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==Sources==
*Galaxy Guide 3: The Empire Strikes Back
*The Empire Strikes Back: The National Public Radio Dramatization
*Galaxy Guide 3: The Empire Strikes Back, Second Edition
*Star Wars Trilogy Sourcebook, Special Edition
*Hideouts & Strongholds
*Strongholds of Resistance
==Notes and references==
Category:Technology