2 Hour Rated Door
Any retrofit or other field modification to a fire rated opening can potentially impact the fire rating of the opening and curries makes no representations or warranties concerning what such impact may be in any specific situation.
2 hour rated door. The frame is. And can be used with new masonry or drywall construction when the wall is being built. The frame is compatible with stud walls that have a thickness of 4 7 8 in. 857 single up to 3 hour rated ratings are limited by door size and orientation.
Hourly ratings include 1 1 2 hours 1 hour 3 4 hour and 1 3 hour with the maximum rating required of any swinging type fire door being three hours. Stairways is an important escape path in fire but it can be block with fire and smoke if a 2 hour fire rated door is not installed in place. The door must be self closing and positive latching push pull plates cannot be used on a fire rated door and ul approved hinges must be used. 11 opening wall rating door and frame rating 4 hour 3 hour 180 minutes.
This is the minimum requirement for all vertical openings in building like stairway or communication risers to prevent fire from spreading quickly. Superlite x 90 fire protective glazing can be used in doors with a max area of 100 sq. A 2 hour rated wall. Most steel doors outlast their wood counterparts by over 10 years are better insulated vandal resistant and longer lasting than wood doors or fiberglass doors.
Table 1 of sdi 118 shows the door and frame must bear a 3 hour fire label. And a 3 4 hour door is used in a one hour rated wall. Steel fire doors are rated by time in minutes or hours that a door can withstand exposure to fire test conditions. For up to 90 min.
The door panel and frame are made from galvanneal steel to ensure a good final paint adhesion. Approved latching device lockset or exit. Labeled door frame 2. Approved closing device door closer or spring hinges.
However a door with a higher fire rating than the opening requires may also be used. The notable exception is that 1 3 hour rated doors are also used with one hour rated walls. A door is installed in a 4 hour fire wall and used as a separation between two adjoining buildings. Spring hinges for doors up to 3 0 x 7 0 only 4.
You need to verify what fire door rating is required. The door and frame assembly is fire rated with a 1 1 2 hours rating. To complete your building s fire protection system install fire rated access doors when it comes to commercial industrial and even in some domestic homes depending on local building regulations these doors are mandatory best access door s 2 hour fire rated access panel is ideal if you need a door that allows greater accessibility.