M&M Insulated Register Box, Series: 640R6, 4 in, 8 in Length, 4 in Width, 4 in Height, 30 ga, Steel, Galvanized, Silver, R-Value: R-6
R-Value | R-6 |
Length | 8 in |
Width | 4 in |
Height | 4 in |
Material | Steel |
Finish | Galvanized |
Color | Silver |
- Lined with 1-1/2 in ductliner providing R-Factor of R-6
- 4 in tall without snap rail flange