parking-signs by admin|Published October 30, 2017-at dimensions 1003 × 448 Images navigation Previous Next Custom .80" Aluminum Parking Signs. Two sizes: 12" x 18" and 18" x 24". Heavy duty aluminum. Minimum order is 5 signs. Custom .80″ Aluminum Parking Signs. Two sizes: 12″ x 18″ and 18″ x 24″. Heavy duty aluminum. Minimum order is 5 signs.