Thanks, Dave! Found it here:

http://canvasdealer.com/track_vents_clips.asp

:: Jason,

:: I've replaced the same track material on 2 boats. It's
:: available from about any sail loft/ or canvas shop. I'm
:: pretty sure they ordered it from Bainbridge, and it's
:: pretty inexpensive too. It comes undrilled, so you can
:: set the fastener spacing.
::
:: :: Is it possible to stump this group on source of supply:: questions? What about the aluminum tracks that hold the
:: :: pipe berth webbing to the inside of the hull? I'm making
:: :: a slide for the outboard and would like to use these as
:: :: guides. Anyone?