PURPOSE: To install an outside angle panel with the superior execution performance by allowing the outside angle panel to nipping-hold a plain plate by a stay and a wall panel, and fixing the plain plate on the stay.

CONSTITUTION: A receiving angle metalware 2 for supporting an outside angle panel 4 and wall panels 6 and 6 on both sides is fixed through supporting metal fittings 3 and 3 on a stay 1 erected at the outside angle part of a wall, and plain plates 5 and 5 which project more than the side part of the panel 4 are installed on both the side parts of the reverse surface of the outside angle panel 4. After the outside angle panel 4 is installed on the receiving angle metalware 2 and attached on the stay 1, wall panels 6 and 6 are arranged on both the sides of the outside angle panel 4, and the receiving angle metalware 2 is nipping-held by the lightning-shaped metalwares 8 and 8 installed on the reverse surfaces of the wall panels 6 and 6 by bolts 7 and 7. The wall panels 6 and 6 are fixed on the stay 1 through the angle metalware 2, and the plain plates 5 and 5 are ressed by the wall panels 6 and 6, and the outside angle panel 4 is installed on the stay 1.