Finitoglass

Fenito glass was a type of glass known for its durability. It could withstand xtonic rays for an extended time, based on its thickness. (DW: Midnight)

On the planet Midnight, the Leisure Palace was fitted with huge domes of Fenito glass fifteen feet thick, ensuring protection from the rays. In the shuttle buses the glass was only strong enough to hold back the radiation for a few minutes. (DW: Midnight)

The Flydon Maxima Research Base of Flydon Maxima had windows of Fenito glass in the observation gallery. (TDL: The Depths of Despair)