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Are Door silencers required on steel doors?
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SILENCER
Resolution:
Mute, Bumber, Rubber Bumper:
Are intumescent seals or gaskets required on fire rated steel doors?
Resolution:
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...:
Are steel stiffeners required in all door constructions?
Resolution:
No, steel stiffeners are not required in Hollow Metal doors, they are one of many optional core available.Per ANSI/SDI A250.8 and ANSI/HMMA 867, core construction are optional offeri...: