The TR-96129 is the standard aluminum base plate for the 8.5'' triangle mini truss. This plate also works very well as a top plate. The plate is effective when a truss section can be bolted down or when a system has enough supporting legs that the bases don't have to play a part in keeping the system standing.
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and tell us about your project! We'd be happy to assist you in determining what will work best for your situation, give you a list of items you'll need, a freight cost shipped to your doorstep and a FREE CAD drawing so you can see what your finished product will look like!