hook 40 is an l shaped member having an upper portion 70 and a lower portion 72 a groove 74 in upper portion 70 is formed to receive bolt 44 shown in fig3 lower portion 72 includes an abutment 76 for abutting with tooth 66 shown in fig6 b a tooth 78 extends from lower portion 72 to abut with lower portion 55 of track 37 shown in fig6 b fig8 a and 8b disclose bracket assembly 36 in greater detail bracket 42 includes flat extension member 80 having a smooth top surface 82 for supporting concrete lid section 60 shown in fig5 a the underside 84 of member 80 has a plurality of spaced channels 85 running the length of member 80 two support legs 86 and 88 extend away from the underside 84 of bracket 42 a bolt 44 is connected to underside 84 to fit into groove 74 shown in fig7 a fig9 discloses a perspective view of a lid 90 showing multiple lid sections 92 in place covering the box 20 lid 90 may be composed of a variety of different materials and may match the composition and texture of the rest of the deck lid 90 extends over the box 20 not shown here at substantially.