can be made of any suitable material such as a metal alloy that is of a sufficient strength to support the weight of the seat group 10 and the passengers articles seated on the seats 28 the spreader bar 36 and the spreader bar door 54 are typically made of formed metal alloys or formed polymers but other suitably strong materials can also be used with additional reference to fig5 and 6 the seat track 12 generally includes a base 72 and a seat track crown 74 the base 72 is secured to a fuselage floor beam not shown in any suitable manner to secure the seat track 12 beneath the floor 14 the crown 74 includes a series of circular apertures 76 that receive and secure the seat studs 42 and 48 as illustrated in fig5 and 6 the cables 20 extend through the seat track 12 to the different seat groups 10 before or after the seat leg assembly 24 is secured to the seat track 12 the door 54 is opened in any of the ways described above depending upon the type of the door 54 provided to allow an installer to grasp the cable 20 and thread the cable 20 through the hole 56 the cable 20 is then attached to the seu 18 to permit the transfer of power and or data between the seats 28 via the seu 18 and the power data source 16 the seu 18 is mounted to at least one seat leg assembly 24 of each seat group 10 the seu 18 is mounted to the seat leg assembly 24 using any suitable fastening device or system the seu 18 is surrounded by an seu shroud not shown that.