1-778-759-9864
Canada (CAD $) flagCanada (CAD $)
BCFurnace
4" X 3" X 10" UNIVERSAL BOOT 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" X 3" X 10" UNIVERSAL BOOT Metal Venting

BCFURNACE

638-421

CA$18.73

+5% Tax • Shipping calculated at checkout.

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

Name

4" X 3" X 10" UNIVERSAL BOOT

2units available

Pickup available at 75 Blue Mountain St #3

Usually ready in 24 hours

Secure Payment
Fast Delivery
Local Pickup

Not sure this fits your furnace? Call us — we're happy to help

Product Details

Description

This professional-grade 4-inch by 10-inch universal boot is designed to provide a high-performance transition in residential and commercial HVAC systems. It serves as a critical connection point, allowing air to move efficiently from 3-inch round ductwork into a 4x10-inch rectangular register or vent. Built from high-quality galvanized steel, this metal venting boot is engineered for durability and resistance to corrosion, ensuring a long-lasting and airtight seal. It is a vital component for anyone looking to optimize their heating, ventilation, and air conditioning (HVAC) setup, providing the necessary adaptation for floor, wall, or ceiling air distribution.

Specifications

Type
Metal Venting
Size
4" x 10" to 3"
Dimensions
10 in × 4 in × 3 in
Application
Used in HVAC ducting to transition from round pipes to rectangular registers in heating, cooling, and general ventilation applications.
Specifications
Galvanized steel construction for rust resistance; universal fit design for standard 3-inch round ducting and 4x10-inch vent openings.

Not sure this is the right part?

Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.

1-778-759-9864

Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com

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Frequently Asked Questions

Is the 638-421 a genuine OEM part?
Yes, the 638-421 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 638-421 is compatible with my BCFurnace furnace?
The easiest way is to match the part number (638-421) 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 638-421 shipped?
Most Metal Venting including the 638-421 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 638-421 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 638-421 is in stock before visiting.

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