In a message dated 5/26/2007, [log in to unmask] writes: is capped with an inverted light-gray plastic channel that is meant to be able to be pulled out later for the installation of a sealant. This could be described as tubular. That's what it is. Thank you Ken. signed, well, my father used to pour steel, so there! ************************************** See what's free at http://www.aol.com. -- To terminate puerile preservation prattling among pals and the uncoffee-ed, or to change your settings, go to: <http://listserv.icors.org/archives/bullamanka-pinheads.html>