The OBE1267 PP650 Top Cap Assembly-Lower is an essential component for Broan-Nu Tone ventilation systems, designed to enhance system performance and efficiency. Made from high-quality materials, this assembly ensures durability and a secure fit. Its dimensions are specifically engineered to fit Broan models, allowing for easy installation. This top cap assembly plays a crucial role in maintaining proper airflow and preventing leaks, contributing to the overall effectiveness of your ventilation system. Regular inspection and replacement of this component are recommended for optimal performance.