"The prime motivator is a demon named W(h)at."

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The Shutters Impervious to Ectoplasm is a security measure against ghosts incorporated into the Firehouse.


When the Ghostbusters discovered they had a Copycat running wild in the Firehouse, Egon decided it would be best to lock up so it can't escape the Firehouse. After Egon activated the shutters with a remote control, special shutters sealed up the Firehouse. The bars were said to be impervious to ectoplasm. [1]


The Real Ghostbusters


  1. Egon Spengler (2009). The Real Ghostbusters - "The Copycat" (1987) (DVD ts. 12:11-12:13). Time Life Entertainment. Egon says: "I installed shutters impervious to Ectoplasm throughout the Firehouse."


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