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.

Fire door standard sizes. Where required by a manufacturer s listing or ansi nfpa 80 fire doors and fire windows a steel overlapping astragal shall be provided. Metric sized internal doors are becoming increasingly popular and are now commonly used in scotland and europe. 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. Steel gage of the door example. Framing rough opening sizes are really quite simple. 2 1 2 3 steel astragals on fire doors.

Fire ratings for doors are influenced by but not limited to the following items. This is because extra core component materials are required in the construction of the door to achieve its fire rating. 2 1 2 4 louvers for fire doors. This will give you room to space the door frame off of the sub floor.

Just add 2 to the width of the actual door size. 20 gage door constructions are approved for smaller door sizes than what is shown above. Chart of door ratings and labels. When specified fire doors shall be provided with fire labeled louvers.

Maximum doors size for fire ratings is 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. 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.