Thin walled brass channel

John K

Western Thunderer
About 15 years ago I bought some thin wall brass U-channel with an ⅛ inch inside dimension to slide onto ⅛ inch thick cassette sides.
I now need some more brass section and I can’t find any.
I know that metal u-sections are usually defined by outside dimensions.
I’ve looked in the usual places K&S etc, without joy.
Any ideas please.
John K
 
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