The Modern Studio Grid Clamp w/ 4" x 4-1/2" Flat Plate w/ Nut is a steel clamp welded to a 4" x 4-1/2" flat cold roll plate. This Grid Clamp works with 1-1/4" or 1-1/2" schedule 40 aluminum speed-rail.
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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