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301 AIR FLOW INDICATOR TUBE
- Applications: Exhaust & heat ventilation
- Quantity: 10 tubes per box
- Note: The air flow tube reacts with vapour in the air and generates a harmless white smoke. The tube is used to check velocity and direction of air flow in rooms and for verifying efficiency and effectiveness of ventilation outlets. The 301 tube is for use with models AS-1, AS-2 or AS-3 Air Flow Indicators (not included).