Bridge Guardrail Marker 18"x18" skaters Width listed is the steel

Width listed is the steel base ring diameter

MUTCD Sign Designation: W5-4

Dawn to dusk & dusk to dawn settings also

7ft Tall x 4ft Wide

Bridge Guardrail Marker 18"x18" skaters Width listed is the steelBridge Guardrail Marker Sign Faces Only Minimum order is 8 pieces. Sizes Available: 18" x 18" Traffic signs match MUTCD Highway Sign Standards. Signs faces are made with high intensity prismatic reflective sheeting with adhesive. Reflective Sheeting: 3M 3930 Series Type III High Intensity Prismatic Reflective Sheeting. Meets ASTM D4956 specifications for traffic signage Square Faces are stackable and can be used as both "right" and "left" stripe