Looking for square tube for railings

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As part of my build, I need to cut some custom doors into my existing railings.
I am looking for 1 1/4" square tube with 'skin flap'. This is pretty standard railing tubing but I can't seem to find a source.
A little help please?

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Never mind. Found some.

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Update for others looking for this material. I was schooled by the supplier that the correct term is 'Q rail', which makes sense when you look at an end section.
Thanks to Jeff at Fire & Marine Inc.

[clownin]

Where were u able to find it

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Where were u able to find it

Jeff Collier
Fire & Marine Inc.
937-323-2770
I won't recieve mine for another day or two, so I can't comment on it yet.

[clownin]

So your in Dayton area

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Sorry bro. A thousand miles away. The rail tubing looks real good tho.