Patent ID: 7808383

Claim:
An apparatus comprising: a support that includes: a base; a projection extending outwardly from said base in a selected direction and having a passageway therethrough, said passageway having first and second ends respectively adjacent and remote from said base; and a tag receiving portion provided on said base and configured to removably support a tag on said base adjacent said first end of said passageway; sealing structure cooperable with said support, wherein when said projection is extending through an opening in a wall, said sealing structure effects a fluid seal between the wall and said support while said passageway provides fluid communication between opposite sides of the wall; wherein said projection has threads; and wherein said sealing structure includes a nut that threadedly engages said projection on a side of a wall opposite from said base, an annular first gasket that extends around said projection between said nut and the wall, and an annular second gasket that extends around said projection between said base and the wall.