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.

Fire door size chart.

Local codes should be reviewed but in general rated doors must be self closing and must have a positive latch. 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. 2 1 2 3 steel astragals on fire doors. The main difference between these and the standard uk sizes above are an increased door height of 2040mm and door thickness of 40mm.

This is because extra core component materials are required in the construction of the door to achieve its fire rating. Just add 2 to the width of the actual door size. Maximum doors size for fire ratings is influenced by but not limited to the following items. 20 gage door constructions are approved for smaller door sizes than what is shown above.

When specified fire doors shall be provided with fire labeled louvers. 2 1 2 4 louvers for fire doors. Fire door standard sizes. Common options are 2040 x 526 626 726 826 926 x 40mm.

Framing rough opening sizes are really quite simple. This will give you room to space the door frame off of the sub floor. Fire ratings for doors are influenced by but not limited to the following items. Getting the rough opening size right the first time will save you from frustration when installing your doors.

Chart of door ratings and labels. Metric sized internal doors are becoming increasingly popular and are now commonly used in scotland and europe. Steel gage of the door example.