Sandwich Board with Detachable Write-on Header, Double-Sided Sidewalk Sign with Blackboard Write-on Surface - Natural Finish Wood 18-3/4"w x 11"h header for advertising additional headlines or a company's name. 18-3/4"w x 26-3/4"h wet-erase chalkboard surfaces work with neon or liquid chalk markers. Quality, natural wood construction for an upscale appearance. Clear varnish with UV inhibitor to protect wood frame from sun damage. Displays2go SKU#: FCB120HNES