Designed to be installed in both on-grade and above grade concrete floor applications. Box has an epoxy coating that allows the box to be placed in on-grade applications without the need for additional vapor barriers. Box comes complete with all components needed for initial installation. Included components are: protective/disposable cover, tunnel system for connecting the two modules of compartments, two (2) removable modules, two (2) cable management guides, two (2) leveling support legs for concrete applications and trade size knockouts ranging in size from 3/4'' to 1 1/4''. Items not included with the box and sold separately are: receptacles, communication jacks, and A/V devices and device plates. Custom options are available upon request. NOTE: For use on bare (polished) concrete or terrazzo floors EFB610-CTR must be used. (Sold separately.)