1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
4" TO 5" INCREASER Metal Venting furnace part available in Vancouver, Burnaby, Port Moody, Langley, North Vancouver, Richmond, Maple Ridge, Delta, West Vancouver, New Westminster, Surrey, Coquitlam, Port Coquitlam, Pitt Meadows

4" TO 5" INCREASER Metal Venting

BCFURNACE

638-108

CA$19.57

+5% Tax • Shipping calculated at checkout.

U.S. Duties/Taxes, if applicable, may be due at time of delivery.

Name

4" TO 5" INCREASER

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

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Fast Delivery
Local Pickup

Product Details

Description

This 4-inch to 5-inch metal vent increaser is a professional-grade ducting adapter designed to transition airflow from a smaller diameter pipe to a larger one. Ideal for a variety of residential and commercial ventilation needs, this increaser is commonly used with clothes dryers, kitchen range hoods, and bathroom exhaust fans to ensure a secure, airtight connection between different sizes of ductwork. Its durable metal construction provides excellent heat resistance and longevity, making it a reliable choice for high-temperature appliance venting. Whether you are performing an HVAC repair or installing a new appliance, this transition fitting helps optimize airflow efficiency and maintain proper ventilation system performance.

Specifications

Type
Metal Venting / Duct Adapter
Size
4 inch to 5 inch
Dimensions
Standard transition length × 5 inch (large end) × 4 inch (small end)
Application
Used to connect 4-inch exhaust outlets to 5-inch ducting in dryer vents, kitchen range hoods, bathroom fans, and general HVAC systems.
Specifications
High-heat resistant metal construction; tapered design for minimal airflow resistance; compatible with rigid and flexible metal ducting.

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Frequently Asked Questions

Is the 638-108 a genuine OEM part?
Yes, the 638-108 is a genuine OEM replacement part manufactured by BCFurnace. We source all Metal Venting from authorized distributors to ensure exact-fit compatibility. This Metal Venting is backed by our 100% compatibility guarantee — if it doesn't fit your furnace, we'll make it right.
How do I know if the 638-108 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (638-108) with your furnace model number. Visit the BCFurnace page on our site and enter your model number in the search bar — our system will show all compatible Metal Venting for your specific unit. You can also call our technicians at 1-778-759-9864 for free compatibility verification.
How fast can I get the 638-108 shipped?
Most Metal Venting including the 638-108 ship within 1–2 business days from our warehouse. We ship across Canada and the United States with tracking on every order. For urgent BCFurnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
Can I pick up the 638-108 at your store?
Yes! Local pickup is available at our Coquitlam, BC location: 75 Blue Mountain St #3. Metal Venting orders are usually ready within 24 hours. Call us at 1-778-759-9864 to confirm the 638-108 is in stock before visiting.

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