Manufacturer Part Number: 7000002156|Accessory Type|PAPR/SAR HeadgearSeries Compatibility|V-100, V-200, V-300 and V-400 Air Regulating Valves for BT-200 & BT-222 Breathing TubesSuspension Adjustment Type|Material|Standards|Class Rating|Length (Inch)|For Use With|Product Service Code|4240UNSPSC Code|