The Rheem-Ruud RXHF-17 External Filter Rack is a versatile 17" filter rack that will increase the efficiency and lifetime of your HVAC system. This rack is designed for external installation and can take a variety of filter sizes, allowing you to tailor filtration to your exact requirements. Weighing only 8.6 pounds, it is both lightweight and sturdy  delivering consistent performance without adding additional bulk to your system.