The emergency block wall is 2mm thick concrete hollow brick on the external wall (Jiangsu quota)

3-22 is a KP1 brick with a wall thickness of 24, which seems to be wrong. Depending on the specifications of the concrete hollow brick you use, we have 19*19*9 sets here, 3-24. Just name the material of the brick. Or you can set the hollow block quota (3-9, 3-12). Mainly due to the different mortar content and labor consumption.