Broan® Pressure Relief Damper, Series: BD Series, 4 in Duct, 30 ga, Steel, Galvanized
| Gauge | : | 30 ga |
| Series | : | BD Series |
| Duct Size | : | 4 in |
| Material | : | Steel |
| Finish | : | Galvanized |
- Combines wall cap and damper into one unit
- Reversible damper can be used for intake or exhaust
- Damper has positive seal works in horizontal or vertical position
- Movable collar aids in sealing cutout
- Built-in bird screen
- Extra long collar for easy connection of rigid or flexible ducting
- Wide nailing/sealing flange
- Can provide code required fresh air ventilation when ducted to furnace cold air return
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