The Deflecto Aluminium Duct Increaser/Reducer (100-125mm) is designed to either increase or decrease the diameter of ducting, making it versatile for various applications. This increaser/reducer can be used with a variety of common duct materials and is suitable for both residential and commercial buildings. The cylindrical brass tube is internally smooth, ensuring maximum efficiency, and has been enhanced for greater durability and ease of use.

When installing fans or other equipment, the Deflecto Aluminium Duct Increaser/Reducer is ideal for adjusting the diameter of your ducting. It can be clamped for ducting or riveted for pipe attachment, providing flexibility in installation. This product is perfect for accommodating different outlet sizes and ensuring a secure fit.

Features

• Internally smooth for maximum efficiency
• May be clamped for ducting or riveted for pipe attachment
• Used to either increase or decrease the duct’s diameter to better accommodate the outlet