The new HIBOX heat insulation hood system of SMS group is installed above the connecting roller table between roughing stand and finishing mill and cuts the heat loss over the entire transfer bar length between strip head and tail by up to 50 percent depending on the boundary conditions, which clearly reduces temperature speed-up in the finishing mill. In addition, the rolling process is more stable and the product mix can be expanded towards smaller final- thickness products and/or higher-strength grades. The HIBOX system hence boosts the productive efficiency of the hot strip mill. HIBOX hoods are arranged above the feed roller table as hinged elements. They are mounted on an assembly plate and allow for individual replacement in case of damage. Each HIBOX hood consists of several HIBOX modules. This design permits individual HIBOX modules to be replaced within the scope of maintenance and greatly simplifies module inspection and maintenance. A single HIBOX module is composed of several steel plate boxes (HIBOX) of manageable size, each thereof filled with insulating material. The HIBOX gave its name to the system and is the basic component thereof. The completely modular design concept offers the benefit of greater resistance to load and wear occurring in the process. The HIBOX system can be integrated in every hot strip mill. Being the smallest unit of this system, the HIBOX can be installed respectively retrofitted in all existing heat insulation hood setups. This means the new HIBOX system developed by SMS group will increase the efficiency and life cycle of existing heat insulation hoods, too.