Fire Door Frame Width
Use the smallest figure as your measurement.
Fire door frame width. 20 gage door constructions are approved for smaller door sizes than what is shown above. Modern flatted properties are usually fitted with external fireproof doors as standard and most of these are flush fire doors this is due. Steel gage of the door example. Was designed with 24 gauge steel and a 20 minute fire rating.
Built with safety in mind this steel door from mastercraft reg. Measure the width of the door in 3 locations. The doors come factory glazed with high performance lowe dg units and the whole set is factory finished in anthracite grey. The practice of knocking up a door frame on site or in a workshop hanging a door and believing that the result constituted a valid fire door installation was never correct.
Including door minimum frame width rough opening size max glass size 20 minute sidelite transom 8 0 x 10 0 4 1 2 add 1 to frame size gap around frame 45 minute sidelite transom 6 0 x 10 0 4 1 2 add 1 to frame size gap around frame 20 and 45 minute borrowed lite 6 0 x 10 0 4 1 2. Labeled door frame 2. This will help ensure that you select the exact right replacement door. The most common door frame width is 762mm in england wales and 726mm in scotland to accommodate the most popular door sizes of the same size.
The wall door frame door and hardware must all be fire rated. 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. The set comprises an 1800mm 6 wide pair of doors and a frame that will accomodate the doors plus 1 or 2 fixed sidelights of nominal width 450mm or 600mm available separately. Frame applications some frame applications are approved for smaller door sizes than what is shown above.
Just to be safe measure the area where your door will go too. Interior knockdown frames that wrap wall a opening width 2 b opening height 1 the rough opening would be 38 x 85 for a 3 0 x 7 0 door frame. Door frames can be supplied pre assembled or in component parts which can be cut to size to fit all door sizes. Maximum doors size for fire ratings is influenced by but not limited to the following items.
Fire door standard sizes. Door frames should be purchased from the door manufacture or from a company licensed to manufacture them or via a bwf approved fire door centre. Fire door regulations may limit your choices to 3 sizes but in most styles we are able to offer a choice of several sizes and two thicknesses including the 30 minute fire doors or the 60 minute fire doors.