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Gas Chimney Vents and Fittings
For use with gas-fired equipment, such as boilers and furnaces, these vent pipes and fittings withstand temperatures up to 400° F. Also known as type B gas vents.
To join pipes and connectors, insert a male end into a female end and secure with the included locking band.
For technical drawings and 3-D models, click on a part number.

Galvanized Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
Chimney Pipe Size | Female ID | Male OD | Lg. | Gauge | Construction | Inner Wall Material | Specifications Met | Each | |
4 | 4" | 4 1/2" | 18" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 000000 |
5 | 5" | 5 1/2" | 18" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |
6 | 6" | 6 1/2" | 18" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |
7 | 7" | 8" | 18" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |
8 | 8" | 9" | 18" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |

Adjustable-angle elbow connectors can be used at an angle or straight.

Galvanized Steel | ||||||||
---|---|---|---|---|---|---|---|---|
Chimney Pipe Size | Female ID | Male OD | Gauge | Construction | Inner Wall Material | Specifications Met | Each | |
Female × Female × Male | ||||||||
4 | 4" | 4 1/2" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 000000 |
5 | 5" | 5 1/2" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |
6 | 6" | 6 1/2" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 00000 |
7 | 7" | 8" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 000000 |
8 | 8" | 9" | 28 | Double Wall | Aluminum | UL Listed | 0000000 | 000000 |
High-Temperature Chimney Vents and Fittings
Built to withstand temperatures up to 1000° F, these vent pipes and fittings are for use with boilers, furnaces, stoves, and other equipment that is fired by gas, oil, wood, or coal.
To join pipes and connectors, twist a male end into a female end and secure with the included locking band.

304 Stainless Steel | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
18" Lg. | 36" Lg. | |||||||||
Chimney Pipe Size | Female ID | Male OD | Gauge | Construction | Insulation Thick. | Specifications Met | Each | Each | ||
6 | 6" | 8" | 28 | Double Wall | 1" | UL Listed | 0000000 | 0000000 | 00000000 | 0000000 |
8 | 8" | 10" | 28 | Double Wall | 1" | UL Listed | 0000000 | 000000 | 00000000 | 000000 |
10 | 10" | 12" | 28 | Double Wall | 1" | UL Listed | 0000000 | 000000 | 00000000 | 000000 |
12 | 12" | 14" | 28 | Double Wall | 1" | UL Listed | 0000000 | 000000 | 00000000 | 000000 |

304 Stainless Steel | |||||||||
---|---|---|---|---|---|---|---|---|---|
Chimney Pipe Size | Female ID | Male OD | Gauge | Construction | Insulation Thick. | Includes | Specifications Met | Each | |
Female × Female × Male | |||||||||
6 | 6" | 8" | 28 | Double Wall | 1" | Locking Band, Removable Cap | UL Listed | 0000000 | 0000000 |
8 | 8" | 10" | 28 | Double Wall | 1" | Locking Band, Removable Cap | UL Listed | 0000000 | 000000 |
10 | 10" | 12" | 28 | Double Wall | 1" | Locking Band, Removable Cap | UL Listed | 0000000 | 000000 |
12 | 12" | 14" | 28 | Double Wall | 1" | Locking Band, Removable Cap | UL Listed | 0000000 | 00000000 |

Adapters connect pipes to duct.
Male OD | Painted 430 Stainless Steel | 430 Stainless Steel | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Chimney Pipe Size | (A) | (B) | Gauge | Color | Adapter Type | Specifications Met | Each | Each | ||
6 | 5 15/16" | 8" | 28 | Black | Pipe-to-Duct | UL Listed | 0000000 | 000000 | 000000 | 00 |
8 | 7 15/16" | 10" | 28 | Black | Pipe-to-Duct | UL Listed | 0000000 | 00000 | 000000 | 00 |
10 | 9 15/16" | 12" | 28 | __ | Pipe-to-Duct | UL Listed | 000000 | 00 | 0000000 | 000000 |
12 | 11 15/16" | 14" | 28 | __ | Pipe-to-Duct | UL Listed | 000000 | 00 | 0000000 | 000000 |
Standard Duct and Fittings

No need for clamps or connectors—duct and fittings press-fit together. Male ends are crimped or tapered, making them slightly smaller than a female end for simple assembly.
Galvanized steel has good corrosion resistance. Aluminum is more lightweight than steel and stainless steel and has good corrosion resistance.
For technical drawings and 3-D models, click on a part number.


Galvanized Steel | Aluminum | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Duct Size | Female ID | Male OD | Includes | End Construction | Gauge | Each | Gauge | Each | ||
Exhaust Vent | ||||||||||
3 | 3" | __ | Damper | Plain | __ | 000000 | 00 | 24 | 0000000 | 000000 |
4 | 4" | __ | Damper | Plain | 30 | 00000000 | 000000 | 24 | 0000000 | 00000 |
5 | 5" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | 6" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 00000 |
7 | 7" | __ | Damper | Plain | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | 8" | __ | Damper | Plain | 30 | 00000000 | 00000 | 24 | 0000000 | 000000 |
Intake Vent | ||||||||||
4 | __ | 3 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
5 | __ | 4 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
6 | __ | 5 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
7 | __ | 6 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
8 | __ | 7 7/8" | Screen | Crimped | 30 | 00000000 | 00000 | __ | 000000 | 00 |
Wall-Vent Flue-Gas Exhausters

Often used for electric-to-gas conversions and renovations, these exhausters allow gas- or oil-fired equipment to be vented through a sidewall rather than a chimney. A thermostat signal starts the exhauster and a sensor ensures proper draft prior to operation. Exhausters have an open dripproof motor enclosure for relatively clean, dry, indoor locations. Use a reducer to vent through ducts with diameters up to 2" wider than the exhauster.
A hood (sold separately) is required for the exterior of the sidewall.