Reversible boards are built with most durable material and exacting designs to offer you the best built freestanding boards available. These units offer an exclusive double pin locking system to ensure that the writing or bulletin boards will not release and swing until needed. All units ship complete with casters. Music Staff Lines: 5 Lines each staff with 1" between each line. 5" between each staff and 4" border at top and bottom. Line thickness is 1/16". (Also available in green chalkboard, call for details.) We have other graphics markerboards available: Polar Coordinates, Graph Coordinates, 1" x 1" Grid Lines, Horizontal Lines and Penmanship Lines, call us for details. MARSH ORDERS TOTALING OVER $1000.00 SHIP FREE.