METAL-FAB 5″x36″ B-Vent Pipe | Type B Gas Vent Double Wall Galvanized Flue

SKU: MFG# 5M3

Weight	5 lbs
Dimensions	38 × 7 × 7 in

$70.18

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$70.18	0%
5–9	$66.67	5%
10+	$63.16	10%

Estimate for this quantity before shipping. Tax display follows store settings. Existing cart quantities can increase the tier. Only one offer applies; a coupon replaces automatic pricing. For 20+ units, contact support for a quote.

Available to order.

Bulk quantity & quote

Quantity needed

Enter the total quantity you need. We will confirm availability and a quote before you order.

Need a firm ship date? Availability may include supplier stock. Confirm availability before ordering for time-sensitive work.

METAL-FAB 5"x36" B-Vent Pipe | Type B Gas Vent Double Wall Galvanized Flue

Specifications & product details

Overview

METAL-FAB 5" x 36" Type B Gas Vent Pipe – Double-Wall Galvanized HVAC FlueThis METAL-FAB MFG# 5M3 5-inch diameter x 36-inch length Type "B" gas vent pipe is engineered for Category I gas-burning appliances, including furnaces, water heaters, and boilers fueled by natural gas or propane. Featuring a double-wall construction with aluminum inner lining and galvanized steel outer jacket, it ensures both corrosion resistance and safe heat insulation.

The SecureLock™ twist-lock system enables quick installation and firm locking with just a push tab—no tools needed. The 1" clearance rating allows for tight in-wall or ceiling installations in accordance with HVAC code.🔧 Ideal for use with:Natural Gas & LP FurnacesWater Heaters & BoilersRoof & Wall Vent TerminationsHorizontal and Vertical Vent Systems📐

Specifications

Diameter: 5"
Length: 36"Construction: Double Wall
Material: Aluminum inner, galvanized steel outerVent Style: Type B Gas VentApplication: Indoor venting (residential or light commercial)

Product details

Part / SKU	MFG# 5M3

Package includes

METAL-FAB 5"x36" B-Vent Pipe | Type B Gas Vent Double Wall Galvanized Flue

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Compatibility & part-number help

Match the manufacturer part number and equipment model to the listing. Check connection sizes, fuel type, pressure or capacity, voltage and dimensions where applicable. A similar appearance or part number alone does not confirm compatibility.

For help, send a parts inquiry with the part number, equipment model, label photos and quantity. Manufacturer documents and item-specific information, when supplied, are in the product details above.

Shipping & availability

Availability may include our inventory and supplier sources. Listed stock does not by itself confirm immediate dispatch. Ask us to confirm a ship date before ordering for time-sensitive work.

Shipping methods and charges appear at checkout where available. Freight, oversized and specially handled items may require a quote. See our Shipping Policy for processing periods, restrictions and delivery information.