Commercial fire door requirements：
Fire doors are considered to be an important part of passive fire protection systems. It not only has smart safety functions, but is also subject to local, state, national and international building regulations. The building codes implemented in your area require the fire resistance rating of fire door components. The guidelines are based on the use of commercial spaces and the maximum number of people in the building.
Fire protection requirements：
Unlike conventional commercial doors, these doors must pass a series of fire resistance tests conducted by a specialized testing organization. Doors that pass the assessment are classified according to their fire rating. This level is in hours; .5, .75, 1, 1.5, and 3 hours are common categories. This measurement indicates how long the barrier can withstand exposure to heat and flame.
The time the door must withstand a fire will vary depending on local building codes and the location within the building (such as the fire rating of the wall near the exit or near the exit).
There are detailed information of our hollow metal fire door:
Knocked down metal frame or Welded metal frame.
Max size 4'0''x 8'0 with 1 3/4’’ thickness
Vision panel and louver will make the door more complete
boring of door slab and jamb for door hardware
ball catch, panic exit device, handle lock, mortise lock and other options.
choice of hinge type: 4.5X4.5X3.4MM, 4.5X4X3.4MM or 4X4X3.4MM
Power coated color choice – available in RAL chart.
Fire label on the door frame and leaf.