1-778-759-9864
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BCFurnace
3" TO 4" 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

3" TO 4" INCREASER Metal Venting

BCFURNACE

638-131

CA$20.40

+5% Tax • Shipping calculated at checkout.

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

Name

3" TO 4" INCREASER

1units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Product Details

Description

This premium 3-inch to 4-inch metal vent increaser is a professional-grade ducting adapter designed to transition smaller ventilation outlets to larger exhaust systems. Essential for HVAC installations, clothes dryer venting, and bathroom exhaust fans, this durable metal coupler ensures a secure and airtight fit between 3" and 4" pipes. Constructed from high-quality, heat-resistant metal, it is built to withstand the rigors of both hot and cold air exhaust, improving airflow efficiency throughout your home ventilation system. Whether you are performing a DIY repair or a new appliance installation, this duct increaser helps bridge the gap between varying duct sizes while maintaining optimal pressure and reducing lint or debris buildup.

Specifications

Type
Metal Venting / Ducting Adapter
Size
3 inch to 4 inch
Dimensions
4 inches × 3 inches
Application
Commonly used in clothes dryers, bathroom exhaust fans, range hoods, and general HVAC ductwork to transition from a 3-inch appliance outlet or pipe to a standard 4-inch ventilation line.
Specifications
Heavy-duty metal construction for enhanced durability and heat resistance; crimped on one end for easy installation; compatible with rigid and semi-rigid ducting.

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Frequently Asked Questions

Is the 638-131 a genuine OEM part?
Yes, the 638-131 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 638-131 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (638-131) 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 638-131 shipped?
Most Metal Venting including the 638-131 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 638-131 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 638-131 is in stock before visiting.

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