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Old 09-14-2009, 04:18 PM
Charles Friedman Charles Friedman is offline
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Join Date: Apr 2002
Location: Seattle Wa
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[quote=Brian Gingras;82323]no spiral, these are solid bar type TW.

Brian, Not to split hairs, but I think the TW in your bar type, means Thin Walled. Mine are TW as well and I can see all the way thru, to the other side of the furnace.
"Glass will save the world from ourselfs" CharlesF
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