An improved floor box assembly (10) for providing electrical and telecommunication connections, having a flush cover (16) with a plurality of peripheral slots (24) formed therein for allowing access of electrical cables to pass therethrough, and a plurality of plugs (26) for closing the slots when not in use. The plugs are slidably insertable in, and removable from, the slots, and enable the cover to maintain a flush profile with the floor when the box is in use.