Imperial Mfg Group Usa Inc BM0059 Black Flue Increaser

Product Description

The IMPERIAL MFG GROUP USA INC BM0059 is a 24-gauge black flue increaser designed to transition vent pipe from a 5-inch diameter to a 6-inch diameter in single-wall black stovepipe and B-vent adjacent systems. The large end is crimped for straightforward insertion into the next pipe section, reducing installation time and the need for additional adapters. At 10.45 pounds per package of 12, this increaser is suited for high-volume service work or job-site stocking. Licensed HVAC technicians and hearth installation professionals are the primary installers.

This increaser is used in residential and light commercial venting applications where a size change is needed along a flue run — typically between an appliance collar and the main vent stack, or where two different pipe diameters must be joined. The 24-gauge black steel construction is standard for use with wood stoves, fireplaces, pellet appliances, and other solid-fuel or gas appliances that call for single-wall black stovepipe. It is sold in a package quantity of 12 units, making it practical for wholesale and contractor purchases.

Key Features

• Transitions flue pipe from 5 inches to 6 inches in a single fitting
• Large end crimped for easy slip-fit insertion into adjoining pipe
• 24-gauge black steel construction standard for single-wall stovepipe applications
• Package quantity of 12 units for contractor and wholesale use
• Lightweight individual units within a 10.45-pound per-package shipment

Compatibility

Designed as an OEM-style replacement and new-installation fitting for single-wall black stovepipe systems requiring a 5-inch to 6-inch diameter transition.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified hearth professional in accordance with the appliance manufacturer instructions and applicable local building codes. Always allow connected heating appliances to cool completely before working on flue components. Insert the crimped large end into the receiving pipe section and secure with appropriate sheet metal screws per local code requirements. Do not use this fitting with listed double-wall or Type B vent systems unless the appliance manufacturer explicitly permits single-wall pipe at the transition point.