Designed for extra stability in high traffic areasDouble pedestal letterboard has extra stable base for secure placement in high traffic areas. Changeable black letter panel has grooved felt surface for simple placement and alignment of letters. Open face allows message to be easily created or changed. Aluminum stand. Size of letterboard surface is 18H x 24"W. Overall height is 60".For complete set of white plastic letters, numbers, and symbols, see part number LH12. For letter storage box, see part number S1.