Two companies that I know of have made these little gems. ELY and Artex-fas.
There may be a link included.
Date: Thu, 19 Apr 2012 14:27:27 -0400
From: Mary Negro <
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Subject: Looking for custom J-bar extension
Hello everyone,
Some art handlers I work with are trying to find a company to make a custom
J-bar extension. Thus far google has come up short, so I'm wondering if
anyone out there has a lead.
An art transport company we work with has a custom extension, but it was
made so long ago that nobody there remembers where it came from!
Any and all advice is greatly appreciated. Thank you all in advance!!
All the best,
Mary