MetalZinc Duct Board Top Supply Box, 10 x 6 in, Additional Information: 30 ga Gauge
Specification Sheet- Metal Zinc's Duct Board Top Supply Boxes offer the ultimate in flexibility, offering multiple box and collar sizes to fit all supply grills and duct sizes
- Flange fits regular supply grills and multi-shutter dampers
- "Tested Tight" for minimum leakage
- Easy cutting of duct board allows any size collar needed
- 30-gauge galvanized steel ASTM A653