M&M Insulated Register Box With Snap Rail Flange, Series: 641, 10 x 6 in, 4 in Height, 7 in Pipe, R-Value: R6
| Gauge | 30 ga |
| Model | 641R6 |
| Pipe Size | 7 in |
| R-Value | R6 |
| Series | 641 |
| Size | 10 x 6 in |
| Length | 12 in |
| Width | 6 in |
| Height | 4 in |
| Material | Steel, Fiberglass |
| Finish | Galvanized |
| Color | Silver |
- Register boxes are lined with 1-1/2 in duct liner to provide an R-factor of R6


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