The Imperial 3 in. to 6 in. Galvanized Steel Furnace Pipe Increaser is built to simplify transitions in residential furnace venting. Designed for Type A vents, this durable connector smoothly joins a 3-inch inlet to a 6-inch outlet, helping you upgrade ductwork without sacrificing safety or airflow.
Key features that stand up to real-world use
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3" to 6" transition—perfect for bridging a smaller furnace vent to a larger duct run in retrofit projects or new installations.
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26-gauge galvanized steel construction delivers dependable strength and excellent corrosion resistance in challenging heating environments.
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Crimp-on large end—the 6" end is crimp-on for a secure, tight seal when connected to compatible ductwork.
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Silver galvanized finish resists rust and maintains an unobtrusive look in utility spaces.
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Boxed packaging ensures safe transit and organized storage on job sites.
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Brand you can trust—Imperial brings proven performance to furnace vent connections.
How this increaser helps you in real projects
Use the Imperial furnace pipe increaser when you need to adapt a 3" vent pipe to a 6" duct run without replacing entire sections of your vent system. It’s ideal for:
- Upgrading aging furnace venting where a larger clearance improves airflow and combustion efficiency.
- Connecting new, higher-capacity duct work to an existing 3" outlet in home heating setups.
- Retrofitting Type A vent configurations in basements, utility rooms, or crawl spaces where a seamless diameter change is required.
Specifications at a glance
- End 1 diameter: 3"
- End 2 diameter: 6"
- End Type: Crimp on Large End
- Gauge: 26
- Material: Galvanized Steel
- Color: Silver
- Packaging Type: Boxed
- Product Type: Furnace Pipe Increaser
- Vent Type: Type A
- Brand: Imperial
If you’re planning a ductwork upgrade or a new installation that requires a reliable 3" to 6" transition in a Type A vent system, this galvanized steel increaser from Imperial offers a precise fit, durable performance, and straightforward installation. Reach for this boxed, ready-to-use connector to keep your furnace vent running safely and efficiently.
