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Description
Metal-Fab Type B-Vent 5" x 48" Single Wall Flex ConnectorType 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
- 5" x 48" Single Wall Flex Connector
Features
- Available in 1ft, 2ft, 3ft, 4ft, and 5ft sizes.
- For easy connection of appliance to common B-Vent
- 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.
- 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" |
| Listings/Standards |
NFPA 54 NFPA 211 UL 441 |
| Diameter | 5" |
| Height/Length | 4ft/48" |
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:
- 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.
- 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:
- The part was destroyed as a result of its defect or any defect in any part covered in this warranty; and
- Metal-Fab Inc. is reasonably satisfied that the part was defective at the time of sale.
- 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.
- 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:
- 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
4.6 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Probably the best
Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12)
I'm not a super meat head muscle workout guy, but I went from being very active about my nutrition and macros and then had an accident which left me disabled so my needs changed. This fits different needs, but is still really really exceptional.
If you're a gym rat just looking for *only* plain old bulk protein to take after workouts, or you reeeeeeallly take a lot of it, honestly I'd get a big giant tub of bulk powder from like muscle milk or optimum nutrition. The price is just too good to ignore, & plus you can add another scoop or two to double or triple the protein. You can't really beat it, other than taste.
Speaking of taste, whether it's a pre-mix or powders, I've never, ever ever ever tasted a protein shake that tasted as good as this chocolate one. Dozens & dozens of brands over the decades, & the only one that comes close was the OG Muscle Milk recipe in the old tetra packs from like 15-20 years ago, before they were bought by Gatorade or whoever. This has NO right tasting as good as it does, with as little sugar, calories, & fat. PLUS having artificial sweeteners like stevia & sucralose. One reason I despise pre-made shakes, zero calorie & low sugar drinks is because I have a very strong detection of artificial sweeteners, but I can barely tell these are there. On top of that, 42 grams of protein in 14floz? I don't know what magic Fairlife did, but it's incredible.
One thing I will say though, is if you're taking a protein drink for pretty much anything other than supplemental protein replacement, this doesn't offer too much else. The "vitamins & minerals" aren't too impressive, and though a high protein drink can make you feel full or satiated, calories & fat are important too. As stereotyped it is, something like Ensure has a really good blend of calories, fat, sugar, and a lot of vitamins. There is a reason it's used all over hospitals & nursing homes. Plus the Ensure "Plus" & "Complete" have 16g & 30g protein each, respectively. They don't taste as good as the Fairlife does, but they're actually not too bad, since they use actual sugar. However, those really are meant for convalescing & true meal replacement, not bulking & training.
The only other downside is price really, at $40-45 for a 12 pack, these aren't cheap. However, when compared to a good alternative like optimum gold at about $25 for a 12 pack, you're getting almost double the protein in each drink from 24 to 42, and they're 14oz instead of 11oz, so you're getting 168oz compared to 132oz, which is like getting 3 more drinks worth. It's still a bit costly per bottle, as an Optimum Nutrition/Pure Protein/Premier Protein 11oz pre-made at $25 a 12pk will be a little over $2 each, & the Fairlife 12pk @ $45 is about $3.75 each. Still cheaper than if you went to pick one up at the gym or a gas station or something, a single would probably be $5-7, so there's value there in bulk. If it's worth it to you, that's up to your wallet.
Another plus is they are SNAP/EBT eligible, so that's a massive W.
If you take loads & loads & loads of protein every single day, and lugging a shaker with powder around isn't a problem, bulk powder is gonna be a LOT cheaper. However, if you only drink one every couple days, and don't want to deal with the blender/shaker hassle, and most importantly want the best tasting shake, this is it. This stuff is awesome, & I'll 1000% be trying the vanilla and strawberry as well. The chocolate is an easy 5 and worth trying.
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Reviewed in the United States on April 13, 2025
★★★★★ 5
Yummy taste!
Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12), Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12)
I’ve been using the Core Power Elite protein shakes and they’ve honestly become a go-to. The taste is super smooth and not chalky at all—more like chocolate milk than a typical protein drink. Each bottle packs 42g of protein, which is perfect after a workout or when I need something quick and filling.
I also love that it’s lactose-free and easy on my stomach. Great for busy days, gym recovery, or hitting protein goals without overthinking it. Definitely keeping these stocked
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Reviewed in the United States on April 24, 2026
★★★★★ 5
The Best Protein Drink I've Ever Had!
Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12)
These are hands down my favorite protein shakes. I’ve tried quite a few different brands over the years, but I honestly don’t drink any other protein drinks now besides these. The chocolate flavor is absolutely delicious and tastes much better than most protein shakes I’ve had.
They’re smooth, not chalky whatsoever like other protein drinks, and have a great balance of sweetness without tasting artificial. The high protein content is also a huge plus for post-workout recovery or a quick meal on busy days. I always keep these stocked in my fridge and restock every other week!
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Reviewed in the United States on May 28, 2026
★★★★★ 5
No chalky aftertaste
Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12)
Been buying this product for years. Good amount of protein for pre/post workout. A little pricey but worth it.
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Reviewed in the United States on May 9, 2026
★★★★★ 5
Delicious!
Flavor Name: Chocolate, Size: 14 Fl Oz (Pack of 12)
I’ve tried a lot of protein shakes and this one is hands down my favorite choice. It tastes like a delicious glass of chocolate milk, without being overly sweet the way some other protein drinks are, and the texture is perfect - neither chalky nor too thick. Some folks don’t like the sugar in the ingredients list but for me, 42g of protein in 230kcal is a godsend for meeting my daily macros. And it’s lactose free so zero issues with digestion. I use a little in my morning coffee as a coffee creamer and drink the rest with breakfast - a great and easy way to start my day with a good amount of protein.
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Reviewed in the United States on March 30, 2026