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The TrafficMaster® Sign Stand is designed to accommodate all 36" and 48" MDI Compact® signs. It features a dual-spring base design with strong initial tension that resists twisting and turning of the sign in high wind gusts. The Drop & Lock upright features a molded cap that helps to channel the crossbrace into the upright and a spring-loaded pin automatically locks the sign in place. Store as one with the MDI Compact® sign for fast and easy deployment. Adjustable legs for stability on curbs and uneven terrain. Full 4-year warranty.