Problem to be solved: to provide an adiabatic block which can be constructed at the corner portion of the furnace at a corner portion of the furnace and is excellent in the workability when the furnace is located at a corner of 90 degrees.A plurality of adiabatic blocks comprising mats of stacked inorganic fiber assembliesThe adiabatic blocks are rotatably connected through a connectionInorganic fiber adiabatic block complexThe adiabatic block comprises a mat piece protruding from the blockThe connection sectionA connecting portion is formed by combining the mat pieces of adjacent adiabatic blocks with each other.Inorganic fiber insulation block complex.Diagram
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