Imperial 4" to 3" Reducer Aluminum Reducer & Increaser

REDUCER

• Ideal for general purpose venting applications
• Reduces the diameter of a round return or exhaust air pipe
• Connects a 4-in pipe or duct to a 3-in pipe or duct
• Crimped on the 3-in end and smooth on the 4-in end
• High-quality aluminum construction for lasting use
• Quick and easy to install

INCREASER

• Ideal for general purpose venting applications
• Increases the diameter of a round return or exhaust air pipe
• Connects a 3-in pipe or duct to a 4-in pipe or duct
• Crimped on the 4-in end and smooth on the 3-in end
• High-quality aluminum construction for lasting use
• Quick and easy to install

REDUCER

This Imperial 4-in to 3-in Aluminum Reducer allows you to connect pipe of different diameters where air flows from a larger pipe into a smaller pipe. Crimped on the small end, it reduces the diameter of a 4-in round return or exhaust air pipe to 3-in, while maintaining optimal airflow. The reducer is ideal for general purpose venting applications and is quick and easy to install.

INCREASER

This Imperial 3-in to 4-in Aluminum Increaser allows you to connect pipe of different diameters where air flows from a smaller pipe into a larger pipe. Crimped on the large end, it increases the diameter of a 3-in round return or exhaust air pipe to 4-in, while maintaining optimal airflow. The increaser is ideal for general purpose venting applications and is quick and easy to install.