SKU: 13856928274

Metal-Fab Type B-Vent 4" x 12" Adjustable Length Pipe

Sale price$89.99 Regular price$99.99
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Description

Metal-Fab Type B-Vent 4" x 12" Adjustable Length PipeType B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist lock connection and locking tab, eliminating the need for sheet metal screws. Metal Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal Fab Type B Gas Vent products 3" 6" adapt to major competing brands and when installed

Type-B Gas Vent products are tested and listed to UL 441 for approved gas appliances and feature our innovative twist-lock connection and locking tab, eliminating the need for sheet metal screws. Metal-Fab Type B Gas Vent combines hemmed flues and casings that maximize product durability and reliability and minimize installation time. Designed for versatility, Metal-Fab Type-B Gas Vent products 3"-6" adapt to major competing brands and when installed establish a UL Listed connection.

What's Included

  • 4" x 12" Adjustable Length Pipe

Features

  • Available in 12" and 18" sizes.
  • Round and Oval Type-B Gas Vent is listed by Underwriters Laboratories INC. for use with approved gas furnaces, heaters, fireplace, and boilers. Metal-Fab meets or exceeds all recognized gas venting codes, standards, or requirements, whether Local, State, or United States.
  • The maximum temperature rating for B-Vent is 530°F.
  • Double Wall Construction
  • SureLock™ B-Vent Locking System: SureLock™ is standard on 3" - 6" diameters.
  • Note: The vent overlaps 1.5" when joined together. Therefore, the assembled length is 1.5" less than the listed length.

Specifications

Application For use with category I natural gas-burning or propane-fired appliances such as gas boilers, fireplaces, furnaces, unit heaters, and radiant tube heaters.
Clearances 1" Minimum clearance to combustibles for 3" - 24"
Flue Material Aluminum Alloy .018" thick for sizes 10" to 30" diameter.
Casing Material Galvanized Steel .018" thick G90 Steel for sizes 3" to 14" diameter
Inner Diameter 4"
Height/Length 12"
Adjustable 3" to 8"
Color Silver

Technical Drawings & Dimensions

Warranty

The Metal-Fab Type-B Gas Vent when installed according to manufacturer installation instructions, as prescribed by Underwriter Laboratories Standard 441 and 103, is warranted by Metal-Fab Inc. for one (1) year from the date of its original installation against defects in material or workmanship of the product for parts only. Any defective part in the product will be, at Metal-Fab’s option, either repaired or replaced. The purchaser must return such defective part, with all transportation charges prepaid by said purchaser to Customer Service Department, Metal-Fab Inc., 3025 May Avenue, Wichita, Kansas 67213. The repaired or replacement part will, in turn, be shipped by Metal-Fab Inc. to the purchaser, freight collects, with the purchaser to be responsible for all freight charges. The warranty on any repaired or replacement part shall be for a duration of time no longer than the remaining or unexpired term of the original warranty. This warranty does not cover any labor or other service charges.

Click to see Full Warranty Details

It is PURCHASER’S RESPONSIBILITY to establish the date of the original installation of the product.

DISCLAIMERS AND EXCLUSIONS

The following shall be applicable to those products of Metal-Fab Inc., described above:

  1. The warranty described hereinabove shall be IN LIEU of any other warranty, express or implied. Except as set out hereinabove, there are NO other warranties, and any statutory or implied warranty of MERCHANTABILITY or fitness for a particular purpose is EXCLUDED from this transaction and shall not apply.
  2. The purchaser agrees that his sole and exclusive remedy against Metal-Fab Inc. shall be for the repair or replacement of defective parts as provided hereinabove. The purchaser agrees that NO OTHER REMEDY (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall be available to him. The sole purpose of the stipulated exclusive remedy provided for herein shall be to provide the purchaser with repair and replacement of defective parts in the manner provided hereinabove. This exclusive remedy shall not be deemed to have failed of its essential purpose so long as Metal-Fab Inc. is willing and able to repair or replace defective parts in the prescribed manner. The purchaser shall not be required to deliver a defective part to Metal-Fab Inc. if:
    1. The part was destroyed as a result of its defect or any defect in any part covered in this warranty; and
    2. Metal-Fab Inc. is reasonably satisfied that the part was defective at the time of sale.
    If both of these conditions are met, Metal-Fab Inc. will replace the part in the same manner provided herein as if the purchaser had delivered it to Metal-Fab Inc.
  3. The purchaser acknowledges that no oral statements purporting to be warranties, representations, or guarantees of any kind about any product of Metal-Fab Inc. have been made to the purchaser by Metal-Fab Inc. or its dealer, which in any way expands, alters, or modifies the terms of the warranty set out herein. Any such statements do not constitute warranties, shall not be relied on by the purchaser, and are not part of the contract of sale. This writing constitutes a complete and exclusive statement of the terms of any warranty, express or implied, of Metal-Fab Inc.
  4. There is NO WARRANTY for any defective part of a Metal-Fab product which has been removed from its original installation site or which arises from mishandling, neglect, fire, flood, lightning, corrosive atmosphere, improper installation of the product, unauthorized modification of the product, improper fuel supply to the product, or the failure of the purchaser to properly install the product as is set out in the installation instructions.

Documents & Files

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 13856928274

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4.5 ★★★★★
Based on 22 reviews
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Candice
Chelsea, US
★★★★★ 5
Absolutely Amazing!! Truly the perfect pillow!
Size: Queen / Standard, Color: White
I absolutely love these pillows. They couldn't be more perfect! I have spent years buying and throwing out pillow after pillow. I struggle with a lot of neck and upper back pain and I struggled even more trying to find the right pillow on top of spending several hundred dollars on pillows that just got tossed. If you want a great night of sleep and you want to wake up feeling refreshed and not struggling with fatigue and every day neck or back pain you absolutely MUST give these pillows a try!!! They are super easy to wash, made with great quality and have not once bothered my many allergies like most pillows do. I have not noticed any of the chemical odors moat pillows give off, easy to adjust does great with just occasional fluffing. So far has stayed fluffy for me although I did put it in the dryer a time or two as the instructions stated to help with extra fluff and also because I couldn't wait for them to air fluff when they first arrived, an Air B&B we stayed at had these and I ordered them before we even headed back home I loved them so much I had to order my own and was too impatient to wait!
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Reviewed in the United States on May 30, 2026
M
Verified Purchase
Marie Phillips
Cuba, US
★★★★★ 4
Comfortable Support
Size: King, Color: White
These bed pillows provide good comfort and support for sleeping, with a nice balance of softness and structure. They hold their shape fairly well and work for both back and side sleeping positions. The overall feel is comfortable and helps improve sleep quality. Overall, they are reliable everyday pillows that offer good comfort and support.
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Reviewed in the United States on May 8, 2026
L
Verified Purchase
Legal_Alien
Port Orchard, US
★★★★★ 5
Very comfortable. On the soft side.
Size: Queen / Standard, Color: White
Soft, but not too soft. I would actually give 4.5 stars. The pillow is a bit too long and bulky, wish it had a bit more support, but overall, great purchase considering the price. Hopefully it doesn't degrade after washing.
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Reviewed in the United States on May 24, 2026
B
Verified Purchase
Bee-Bee
Phoenix, US
★★★★★ 5
Excellent pillows that are worth the cost
Size: Queen / Standard, Color: White
These are wonderful. Completely relieved my back pain the first night I slept on them -– I put one underneath my back as I slept, and a weeklong terrible pain vanished overnight. Felt like sleeping on a cloud. As others have noted, they are neither too soft nor too firm…they’re really just right, and I think would make great guest room pillows since everyone would like them. These were definitely worth the money.
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Reviewed in the United States on June 5, 2026
J
Verified Purchase
JBaranow
Battle Creek, US
★★★★★ 5
Great , fluffy pillows
Size: Queen / Standard, Color: White
They came compressed into a small roll so I was wondering how they would do. BUT they fluffed up to incredible size and comfy feel. I am impressed so far!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026

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