DuraBreeze® Duct Muffler 4" Mini

A DuraBreeze® Duct Muffler Mini reduces the sound traveling through ducting without restricting airflow. The 4-inch Mini features a durable, lightweight, rustproof aluminum housing and 1-inch-thick internal glass fiber with a noise reduction coefficient of 85 percent. Measures 11 inches long with a 8.5-inch diameter and a 4-inch flange. Includes a one-year warranty.

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