M&M Register Box Without Tab, Series 640 Series, 6 in Collar, 8 in Length, 6 in Width, 4 in Height, R-Value: R4
| Gauge | 30 ga |
| Model | 640 |
| R-Value | R4 |
| Series | 640 Series |
| Size | 6 in Collar |
| Length | 8 in |
| Width | 6 in |
| Height | 4 in |
| Material | Steel |
| Finish | Galvanized |
- Without tabs and snap-rail flange
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