Frames are constructe d of 1.2mm (18 gauge) or 1.5mm (16 gauge) or 2mm (14 gauge) or 2.5mm (12 gauge) commercial quality cold rolled steel ASTM A366 or hot dip galvanized steel sheet ASTM A526, G90 for doors of either 45mm (13/4") or 35mm (13/8") thickness with the details conforming to SDI-111A. All bends shall be formed with true sharp radii.
 Transom side light frames may be of 1.5mm. (16ga.) or 20.0mm (14ga.) Steel Sheet.
 Maximum Frame size: 3650 X 3048mm. or 3048x 3650mm. for masonry Wall installations and
 3650x3048mm. for dry wall installations.
 Maximum Door opening Size: 1220x2438mm. for single, 2438x2438mm. for pair.
 Jamb Depth: 120mm.Min. thru 323mm. Max. (4 3/4" thru 12 3/4')
 maximum throat Opening: 114mm. For masonry wall; 92mm. for dry wall