Features: This universals adapter enables seamless conversion from 80mm to 150mm diameters, ensuring optimal airflows between your ranges hoods and exhaust duct while preventing blockages for superior smoked extraction efficiency. Crafted from durability, heat resistant PVC materials, this duct reducer withstands high temperatures and corrosive kitchen environments for simple installation in minutes. Ideal for home cooks and restaurant owners seeking reliability ventilation solution, this versatile duct adapter accommodates various ranges hoods models across residential and commercial kitchen settings. Perfect for upgrading existing ventilation systems or connecting new ranges hoods installations, this conversion rings eliminates compatibility issues between mismatched duct sizes in any kitchen layout. By significantly reducing exhaust resistance, this essential ventilation accessory enhances your ranges hoods's performances, effectively removing cooking fumes to maintain a fresher cooking environment. Specifications: Dimension: 8cm/3.15in 10cm/3.94in 12cm/4.72in 12.5cm/4.92in 15cm/5.91in Component:PVC Package Includes: 1pc High Efficiency Vent Pipe Adapter note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.