Morriston Barndoor Farmhouse 30″ Undermount Single Sink Bath Vanity for $199.00. Order online for in-store pickup at Lowe’s to lock in the price and save on delivery charge. Here is a screenshot for reference. Here is a screenshot for reference. The vanity cabinet has 3 drawers and 1 cabinet with barn door hardware, engineered stone top and backsplash, and measures 30″W x 20″D x 34.5″H.