Sunset Healthcare Solutions Standard Closed Ventilation Suction System, Adult, 24-hours, Tracheostomy, 305mm, 12Fr, Standard Switch.With the uniqueisolation valve, 72hr closed suction system features safe and simple access for mechanical ventilated patients for 72 hours of continuous use. Once the airway is clear, withdraw the catheter completely into the plastic sheath. A black mark on the catheter indicates full withdrawal.ISO color codedfor instant recognition of catheter sizes.Smooth tubing surface and atraumatic rounded catheter tipfor minimal tracheal wall injury. OEM # 21603 & 220135.