| 摘要 |
A fire resistant aluminum door frame assembly is provided which comprises a partition wall having a door opening therethrough; a header assembly; opposing jamb assemblies; a strike assembly disposed along one jamb assembly; at least one hinge assembly disposed along the opposite jamb assembly; and a door member supported within said door opening by said hinge assembly and having a lockset engaging said strike assembly; whereby upon exposure to extreme heat, the door frame assembly accommodates expansion of the header and jamb assemblies without buckling, and said strike and hinge assemblies respectively maintain said door support and lockset engagement of the door member, wherein said door frame assembly attains a fire rating. |
