BE2 Bus Empty Sign - 2 Sided $35.28 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details with keyhole suction cupsThe two-sided Bus Empty / In Use Sign remains in the window and is changed from "In Use" to "Bus Empty" at the end of... Details Back Detailswith keyhole suction cupsThe two-sided Bus Empty / In Use Sign remains in the window and is changed from "In Use" to "Bus Empty" at the end of the shift. Keyholes allow changing without removing suction cups from window.