$151.20
- Heavy-duty 16 gauge steel construction (stainless steel models available on application)
- Designed for round ducts
- Gasket rated to 2300ºF (1260ºC) for fire tight seal
- Positive bolt pattern ensures fire-safe closure
- Back frame reinforces duct cutout
- Easy to install – No welding required
- Easy to clean
- U.L. Rated
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