steel thickness verses fire rating

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To use Von Duprin mullion for something other than our standard strike, order the mullion "Blank" and prep in the field.
Intumescent seals or gaskets are not required on fire rated steel doors. Generally speaking, the requirement for intumescent seals or gaskets are a function of the individual manufacturers’ listi...
Gage: Prior to 1970, sheet steel thickness was referred to by the term "gage". ASTM and ANSI currently do not list gage numbers in their standards. Like many generic terms, gage (or gauge) is ingra...
The term "gage" and Gauge" are used interchangeably.