The Quadruple-Thick Plastosteel Windows are used at the 8-Rear on the SCS DeepShip 86. According to Roger Wilco and the Narrator, the windows feel "cold to the touch".

Judging by the name, they might be a slightly less sophisticated version of the Quintuple-Thick Hyperglazed Safety Glass used on the StarCon Shuttles, which might indicate either that the shuttles were built much later than the DeepShip when technology had evolved further, or that they were simply just being cheap.

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