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| Color | : | Black |
| Dimensions | : | 10-7/8 in H x 10-1/2 in W x 2-5/8 in Thk |
| Material | : | Plastic |
| Suitable For Use With | : | Model 500 Humidifier |
| Type | : | Replacement |
The Aprilaire Scale Control Insert 4640 is the U-shaped component which encases the Water Panel Evaporator. Used with water panel number 10 and water distribution tray part number 4331. For Models 500, 500A and 500M.
Aprilaire®, 4640, Scale Control Insert, Replacement, For Use With: Model 500 Humidifier, Plastic, Black, 10-7/8 in H x 10-1/2 in W x 2-5/8 in Thk Dimensions
- Drain hole down oriented