The DAMPER-ADAPTOR 3-1/4X10 is a versatile component designed for Broan-Nu Tone ventilation systems. This adaptor allows for easy connection between duct sizes, facilitating efficient airflow management. It includes all necessary hardware for straightforward installation, making it a convenient choice for both professionals and DIY enthusiasts. Constructed from durable materials, it ensures long-lasting performance and reliability. The adaptor meets industry standards, ensuring compatibility with various Broan-Nu Tone models and enhancing the overall efficiency of your ventilation setup.