 789-0199. That's 789-0199. And Maryland Spray Lining is just off Security Boulevard, 2076 Lord Baltimore Drive in Windsor Mill. Call Jack Carver. That number is 410-455-0800. 455-0800. These Mill Spec Liner Dealers can install any truck accessories, tonneau covers, step bars, toolboxes, truck hitches, and more. Schedule your appointment today to get your Mill Spec Liner installed.