Black Grille Cover 3-1/2 X 21-1/2 - EXX-006-500

The Black Grille Cover 3-1/2 X 21-1/2 is a direct replacement part used in Aqua-Hot and Hydro-Hot hydronic heating systems to provide a finished appearance for interior heat exchanger installations while allowing proper airflow into the living space. This grille cover is commonly installed over Cozy heat exchangers and other fan-driven heating units. Important Information Promotes Proper Airflow – Allows heated air to circulate efficiently while protecting internal components from debris. Clean Interior Appearance – Provides a professional, finished look for heat exchanger installations in cabinets, walls, or furniture. Genuine OEM Replacement – Designed for perfect compatibility and optimal performance in Aqua-Hot heating systems. Compatible Models Heat Exchanger WR4000 WR13000 WR20000 WR30000 Help Me Find My Model Number