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It's TOUGH Stuff
We have had welded square in the past and found it didn't take much overtightning to start caving in the tube. This BOSCH rail connects with T fastners in a groove that virtually eliminates this problem. It is also very light. As for strength the extrusion on the BOSCH 30x30 rail is extremely rigid. We made a simple box 30 x 36 x 8 and could easily have 4 yes 4 students standing on it and it didn't budge. Good Stuff!
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