Hollow metal door also named steel door, is made of galvanized steel sheet 18 gauge, 16 gauge, 14 gauge. The dimensions for hollow metal door is calculated by millimetre or by feet. For example, 3ft x 7ft, 6ft x 7ft or 3ft x 8ft, 6ft x 8ft.
Asico door could offer UL hollow metal door maximum size 4ft x 8ft for single door and 8ft x 8ft for double door. The size can be inner frame dimension or outer frame dimension depending on the project opening. Meanwhile we could provide you with solutions on the larger size hollow metal door like 10ft high, with top transom etc.
Asico door would do stock standard size also the custom door for projects. Welcome to our company for more business discussing. Feel free to add me by whatsapp/wechat for easy talking on line.