Wanzl Tandem Manual Mechanical Swing Gate | Checkout GateWanzl Tandem Manual Mechanical Swing Gate Checkout Gate Wanzl Tandem lockable checkout barrier. The compact and secure solution between two cash desks. Optimum use is made of the available space, and the access widths are fully retained. The Tandem checkout barrier is also available as an individual solution. Wanzl swing gates feature exceptional craftsmanship and advanced, reliable engineering, designed to deliver long term performance with minimal