• NCHRP 350 compatibility- crash test results available. • Complies with MUTCD standards. • Wind-relieving, dual upright coil spring system for stability in gusty winds. • Ease of use with fast kick release system, locking legs into place when fully extended. • Displays 36" and 48" roll-up and rigid signs. • All aluminum and steel construction. • 1-1/4" sq. aluminum legs with two position height adjustment and anti- skid foot pads. Open footprint : 74" x 135" (1880 mm x 3429 mm) • Minimum height from the ground to bottom of panel: 7' (2134 mm). Signs Sold Separately!