4 Hour Fire Door
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Fireking fire rated door model 631 fire rated fire door is an ideal choice for projects requiring a listed rolling service fire door where both safety and economy are priorities.
4 hour fire door. The door and frame assembly is fire rated with a 1 1 2 hours fire rating. 20 45 60 90 minute or 3 hour label. The frame is compatible with walls that have a thickness of 4 7 8 in. 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.
This 24 gauge steel door is available in up to a 4 hour label for doors up to 152 sq ft 14121 sq m. Nfpa 80 allows a maximum door undercut of 3 4 inch however fire doors are tested with smaller clearances in accordance with nfpa 252. Steel is the sole door material to deliver a 3 hour fire rating. Fire rated doors control the spread of fire and smoke for 1 1 2 hours 90 minutes up to 3 hours.
Cdf offers low prices on fire rated steel metal doors. Labeled fire doors control the spread of fire and smoke for up to 3 hours. 2008 at exova warringtonfire and have achieved ratings of up to 4 hours depending on specification. Thinking back to our fire doors then clearly if the hazard and the risk of a fire is substantial then it may be advisable to install a 4 hour fire door sometimes referred to as an fd240 fire door i e.
Our steel fire door range is available as 1 2 3 and 4 hour fire resistant doorsets integrity only in many configurations. Fire rated door leaves are manufactured with a pyropanel fire resistant core these doors are fully tested and certified to as1530 4 and as1905 1 and are available in a variety of sizes and finishes in 30 minute 1 hour 2 hour and 4 hour fire resistance levels. Providing protection for 240 minutes. Corridors have a fire rating of one hour or less and the fire doors in them are required by code to have a fire rating of 1 2 or 1 3 hour the intent of which is mainly to restrict smoke travel.
Metal fire doors are an economical alternative to wood fire doors when more than a 20 minute rating is required. And can be used with new masonry and drywall construction when the wall is being built. Fire rated doors manufactured in the uk doortechnik fire resistant doors have been tested to bs 476 or bs en 1634 1. The door panel and frame are both made from galvanneal steel to secure and protect your home or building.
All doors have been subjected to a hose stream test unless otherwise noted.