Fire Door Size Chart

Getting the rough opening size right the first time will save you from frustration when installing your doors.

Fire door size chart.

Where required by a manufacturer s listing or ansi nfpa 80 fire doors and fire windows a steel overlapping astragal shall be provided. This is because extra core component materials are required in the construction of the door to achieve its fire rating. Framing rough opening sizes are really quite simple. Door size conversion chart.

2 1 2 3 steel astragals on fire doors. Steel gage of the door example. 20 gage door constructions are approved for smaller door sizes than what is shown above. Just add 2 to the width of the actual door size.

When specified fire doors shall be provided with fire labeled louvers. This will give you room to space the door frame off of the sub floor. Fire door standard sizes. The main difference between these and the standard uk sizes above are an increased door height of 2040mm and door thickness of 40mm.

Chart of door ratings and labels. There are also limits to the size of glazing in the door the width of gaps between door panels the height of the door under cut and the size of air transfer grilles. Local codes should be reviewed but in general rated doors must be self closing and must have a positive latch. You should add 2 1 2 to the height of the actual door.

Maximum doors size for fire ratings is influenced by but not limited to the following items. Fire ratings for doors are influenced by but not limited to the following items. All of the standard uk and metric door sizes are usually available as a fire door equivalent with the only difference being an increased door thickness of 45mm.