| Model Code | Description | |
|---|---|---|
| 01 | 631.307, 631.308, 631.309, 631.312, 631.313, 631.314, 631.332, 631.333, 631.334, 631.340, 631.342, 631.343, 631.344, 631.349, 631.350, 631.352, 631.353, 631.354, 631.364, 631.370, 631.372, 631.373, 631.374 | AIR CLEANER WITH MAINTENANCE INDICATOR |