Steel City® Flush service floor box for power and communications. 16 gauge pre-galvanized steel construction. Adjustable with four exterior levelling legs capable of 2 inch pre-pour adjustment and an interior levelling ring capable of 1-1/4 inch after pour adjustment. Made with a variety of KOs ranging from 1/2 to 1-1/4 inch. Box utilizes the 640P series metallic and non-metallic floor box accessories with the unique one-step installation method. Shipped with expendable steel cap to prevent ingress of concrete at installation. The new 740 series line of stamped-steel floor box is an extension of TB's industry leading 640 and 840 series cast iron floor box. The new box provides flush service for power, communications and data. Multiple-gang box allows the user to place high- and low-voltage in a single floor box. The 740 series can be used for carpet or tile applications.