Description
Ensure your whole‑house humidifier performs at its best with the genuine Aprilaire 4640 Scale Control Insert. Specially designed to encase the water panel (Number 10) and work with the water distribution tray (4331, sold separately), this U‑shaped insert plays a pivotal role in maintaining humidity effectiveness and prolonging system life.
Specifications:
- Compatible Models: 500, 500A, 500K, 500M, 500MK, 500MZ, 500Z, 500KZ, 500MKZ, 4792
- Materials: Polypropylene
- Actual Measurements: 11.143H x 3.44W x 10.44D (inches)
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