The Steel Strong-Wall stacked wall is a prefabricated, steel panel that helps structures resist lateral forces such as those created by earthquakes and high winds. The stacked wall features factory-installed components for use with the Two-Story Stacked-Wall Connector Kit for two-story stacked applications and with the Balloon Framing Wall Connection Kit for balloon framing applications. Designed for some of the highest allowable loads in the industry, this code-listed wall combines simplified installation with superior performance. 18 in. x Nominal 10 ft. Steel Strong-Wall® Shearwall, Stacked (Pack of 12).