150mm to 125mm Duct Reducer – Designed to connect 150mm and 125mm round ventilation ducts, providing a simple and effective solution for joining different duct sizes within ventilation and extraction systems. Smooth Airflow Transition – Aerodynamic tapered design helps maintain efficient airflow while reducing turbulence, supporting optimal performance of extractor fans, cooker hoods, and HVAC ventilation systems. Strong & Lightweight Material – Manufactured from high-quality, durable plastic that is resistant to corrosion, moisture, and everyday wear, making it suitable for long-term use in residential and commercial ventilation systems. Suitable for Multiple Ventilation Systems – Ideal for bathroom extractor fans, kitchen cooker hoods, inline fans, utility rooms, laundry ventilation, heat recovery systems, and general HVAC duct installations. Simple Push-Fit Connection – Designed for fast installation with standard round ducting. Lightweight construction allows easy handling and secure integration into existing ventilation duct systems.