autodoor bottom seal on fire door


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...
Yes, an automatic operator can be installed on a Dutch door. The operator must be installed on the top leaf of the Dutch door. Only the top half will open unless the top and bottom leaves (se...
Standard Doors: standard inverted bottom channels will accept the following manufactures automatic door bottoms: National Guard (320) Pemko (420) Zero International (355/354)
Special (custom) option: a special/optional end channel that will support the following manufactures: National Guard (422/423/522) Pemko (443) Zero International (360/364).
There is no fire rating for butt hinges, but NFPA 80 says to use steel material and ball bearing hinges for fire rated openings.
Installation should be 6" from bottom of the door. See attached templates as reference.  T-5494 for HM Doors W-5494 for Wood Doors
The magnet assists with the door bottom staying in the "up" position.  It takes a load off the mechanical components.  It is only included on certain door bottoms (367, 368, 369) that are...