Steel City® 840 Series flush service floor box for power and communications. Cast iron, watertight body, fully adjustable. Painted silver enamel inside and out for additional corrosion resistance. Exterior levelling screws for adjustment to finished floor. Removable partitions for large capacity requirements. Shipped complete with expendable cap to prevent ingress of concrete during pour. 3/4 inch threaded conduit openings are standard. Uses P64 Series MopTite™ covers (one cover per gang).