CA
4" X 18" B-VENT LENGTH Metal Venting
+5% Tax • Shipping calculated at checkout.
U.S. Duties/Taxes, if applicable, may be due at time of delivery.
Pickup available at 75 Blue Mountain St #3
Usually ready in 24 hours
Not sure this fits your furnace? Call us — we're happy to help
This premium 4-inch x 18-inch B-Vent length is a essential component for safely exhausting flue gases from gas-fired appliances. Engineered with a durable double-wall construction, this metal venting pipe features an inner aluminum liner that resists corrosion and an outer galvanized steel shell for superior structural integrity and heat protection. Designed for high-efficiency HVAC installations, this B-Vent pipe ensures a secure, airtight connection to maintain the necessary draft for residential furnaces, water heaters, and boilers. Its lightweight yet robust design is optimized for venting Category I natural gas or liquid propane systems, providing a reliable solution for both new installations and professional repairs.
Our team is happy to help you verify compatibility before you order. We'll confirm it fits your specific furnace model.
1-778-759-9864Mon–Sat 8AM–9PM PST · Or email parts@bcfurnace.com
Compatible parts and related replacements
Yes, the 638-120 is a genuine OEM, or a factory replacement manufacturer approved part. 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.
The easiest way is to match the part number (638-120) with your furnace model number. Visit the homepage 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.
Most Metal Venting including the 638-120 ship within 1–2 business days from our warehouse. We ship across Canada and the United States, and worldwide, with tracking on every order. For urgent furnace repairs, contact us at 1-778-759-9864 for expedited shipping options.
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 638-120 is in stock before visiting.
Still not sure this is the right part? Call 1-778-759-9864 and we will check your model number with you.
Looking for more Metal Venting?
