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The IMPERIAL MFG GROUP USA INC BM0077 is a 24-gauge black flue reducer designed to transition a 7-inch flue collar down to a 6-inch flue pipe in single-wall black stovepipe and vent connector systems. The small end arrives pre-crimped, allowing it to slide directly into the receiving end of a 6-inch flue pipe section without additional field modification. This reducer is fabricated from 24-gauge black steel and is a standard component used by HVAC technicians and hearth installers when connecting appliances with differing collar and pipe diameters in residential heating applications.
This flue reducer is suited for use in residential installations involving wood-burning stoves, pellet stoves, gas appliances, and other heating equipment vented through single-wall black stovepipe. It is typically installed in the vent connector run between the appliance flue collar and the main chimney or chase entry point. The pre-crimped small end simplifies assembly and reduces installation time when stepping down from a 7-inch collar to a 6-inch pipe run.
Designed as an OEM-style replacement and standard fitment component for single-wall black stovepipe vent connector systems requiring a 7-inch to 6-inch diameter reduction.
Installation should be performed by a qualified HVAC technician or hearth installer following applicable local codes and NFPA 211 guidelines for solid-fuel and gas appliance venting. Allow the appliance and connected vent system to cool completely before handling or replacing any flue components. Secure all joints with sheet metal screws per manufacturer and code requirements to prevent separation under thermal cycling. Inspect the surrounding vent connector run for damage, blockage, or improper clearances before placing the system back in service.
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