Bar or I beam clamps.
I have various lengths available and they are:
2 clamps at 72" - $40 each
3 clamps at 60" - $30 each
1 clamp at 48" - $25
7 clamps at 36" - $20 each
1 clamp at 31 " - $20
The length measurement is taken inside or between the jaws.
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