This genuine Sub-Zero drain trough heater is compatible with multiple models, including 501F, 601F, and 601F-2. It is a high-quality electric heater that is built-in or integrated during installation. The unit is designed with a multicolor brand design and features a defrost drain for efficient operation. With a manufacturer warranty of 6 months, this drain trough heater is a reliable choice for your built-in Sub-Zero refrigerator. It is easy to use and comes with a set that includes the drain heater. This product is made in the United States and is an OEM part for Sub-Zero systems.
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