Model 50TRI The Tripod Sign Stand 50TRI is designed to accommodate rigid signs 5/8” thick. It is steel with zinc coating to resist rust. The Tripod holds 36” or 48” rigid signs, 14.5” from pavement. It is equipped with a bracket that holds three wooden dowel flags (flags sold separately). There is a ballast hook to hang sandbags or weights for added stability. Easy set-up and it folds to store compactly. NCHBRP-350 compliant.