[WHAT TO GET]: The eccentric reducer pipe adapter is made of durable galvanized steel material, strong, waterproof, moisture-proof, wear-resistant, good toughness, strong pressure resistance, not easy to deform, can be used for a long time. Smooth interior surface can reduce the resistance of ventilation.[WHEN/WHERE TO USE]: This eccentric duct reducer and increaser are used as a duct adapter for duct diameter changes in the ventilation system. Suitable for the HVAC system, bathroom exhaust, air-cooled hood, embedded fans, hood, roller dryer, chimney, dust collection system, etc.[WHAT IT IS]: Interface outer diameter: 180 mm / 7 inch, 100 mm / 4 inch; Height: 120 mm / 4.7 inch, Thickness: 0.6 mm / 0.
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