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Description
Metal-Fab Type B-Vent EasyOut 4" Drafthood 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
- 4" Drafthood Connector
Features
- Connects to a furnace’s internal vent elbow and exits the cabinet, where B-Vent can then be connected.
- Designed for specific Carrier, Bryant, and Payne gas furnaces, see spec sheet for models.
- 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" |
| Listings/Standards |
NFPA 54 NFPA 211 UL 441 |
| Flue Material | Aluminum Alloy .012" thick for sizes 3" to 8" diameter |
| Casing Material | Galvanized Steel .018" thick G90 Steel for sizes 3" to 14" diameter |
| Diameter | 4" |
| Height/Length | 8.62" |
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
4.1 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 5
instantly more hydrated + glowy skin
Scent: Collagen, Size: 4 Count (Pack of 1), Scent: Collagen, Size: 4 Count (Pack of 1)
I love this mask. It’s one of those products you can actually see a difference with right after using it.
It really helps with:
1. Deep hydration – my skin feels plump and moisturized, not dry or tight
2. Smoother texture – it softens everything and makes my skin feel really smooth
3. Glow/brightness – gives that fresh, healthy glow without looking greasy
How I use it: I apply it on clean skin (usually at night), leave it on as directed, and let it fully absorb before removing. I like using it when my skin feels dull or dry and want a quick reset.
Overall, it’s super easy to use and makes my skin look more refreshed every time. Definitely a go-to for me.
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Reviewed in the United States on April 28, 2026
★★★★★ 4
Woke Up Glowing ✨ (But Sleeping In It Is a Stretch lol)
Scent: Collagen, Size: 4 Count (Pack of 1)
I was honestly impressed with this mask! It feels super soft, cooling, and refreshing while wearing it. The jelly texture makes it feel really hydrating and luxe, like a mini spa night at home. My skin looked smooth, plump, and GLOWING the entire next day after I took it off. Like… noticeably radiant.
I also have sensitive skin, so I was a little nervous trying it at first, but I didn’t have any irritation or reaction at all. My skin felt calm, hydrated, and refreshed afterward.
One thing I actually liked was that the mask was easy to customize a little. I have a nose piercing, so I just tore a small piece near my nose so it would fit comfortably without irritating it. The material held up perfectly, so that was a nice bonus for anyone with piercings or who just needs a better fit in certain areas.
My only complaint is the “sleep in it” part of the instructions. I personally don’t see how that’s possible 😅 The mask stays pretty moist and jelly-like the whole time, so it felt uncomfortable to lay down in and I kept feeling like it would slide around. I ended up just wearing it for a while before bed instead.
Overall though, the results were worth it and I’d definitely use it again for the glow alone!
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Reviewed in the United States on May 3, 2026
★★★★★ 5
Nice mask! Caviar
Scent: PDRN, Size: 4 Count (Pack of 1), Scent: PDRN, Size: 4 Count (Pack of 1)
The first 3 pictures were taken after the first hour and a half. The second 3 pictures were taken at 2 hours. The mask had a hard time dissolving underneath my eyes and around my chin area mostly but everywhere else it hardened within the first hour or so. I will try to wear it for longer than 2 hours next time. To see if that changes, but my skin feels really nice right now. It's a little sticky, but it looks healthy and has a nice glow. Application is easy. I love that its separated into 2 parts.
Doesn't fit well around the nose between the eyes and doesn't cover my entire face but its a great mask. I tried the caviar one this time. I have the collagen ones as well but these have better reviews.
They seem to work effectively, for a nice glow and self pamper session.
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Reviewed in the United States on May 5, 2026
★★★★★ 5
My Favorite Mask
Scent: Collagen, Size: 4 Count (Pack of 1)
I’ve been really impressed with this Bio-Collagen hydrogel mask! It feels incredibly cooling and soothing on the skin, especially after a long day.
The overnight wear is a huge plus—you wake up with your skin feeling noticeably more hydrated, plump, and smooth. It doesn’t feel heavy or sticky, and it stays in place better than most sheet masks.
After a few uses, I’ve noticed my skin looks more refreshed and even, and my pores appear a bit more minimized. It’s a great option when your skin needs a little extra boost or before an event when you want that “glow.”
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Reviewed in the United States on May 5, 2026
★★★★★ 5
Love ❤️ this product! 100% recommend!
Scent: Collagen, Size: 16 Count (Pack of 1)
My initial encounter with these was until TikTok but I ordered them from Amazon for myself and my daughter for convenience and Prime shipping. There were two choices I think the one is a four-pack and the one I got is a 16 pack. The 16 pack will last you 4 months if you're doing it once a week as instructed.
I open the top and two sides when I'm doing it just to have accessibility and to be able to use the remnants liquid in the pack after I'm done applying the facial part I put the liquid in the pack on my neck and chest.
They are a little slippery when you take them out. I watched a video on how to apply it and did the bottom part first and then the top part sometimes I have to snip the top part near the nose to get it to fit properly but you don't have to in general.
There are three pieces that are left over the two eye pieces and the lip piece. You can put them below your eyes or above your eyes on your brows and then put the mask over them which is what I do. Or you can put them under your eyes and put the mask over them but I find it doesn't absorb all the way in that location due to the double thickness I guess. The lip one you can put over your lip or put it on vertically over your throat where the skin can get a little saggy.
Once you have it on it's best to sit back and relax for 30 minutes or so at about a 45° angle so it doesn't slip off. After about 10 to 15 minutes it doesn't slip around as much and after 30 it's obviously started absorbing and tends to stay pretty well.
I haven't noticed any staining on the pillows or anything like that from it and by morning actually by 4 hours later it's completely absorbed and all you have left on your faces the plastic that it was attached to. You just pull that off and throw it away. It's white when you put it on and it's clear when it absorbs.
I definitely noticed an improvement in my skin quality and the collagen sinks in easily and less about a week. I am a redhead with delicate skin and I haven't had any reaction to this product at all I know that other masks have caused problems for friends but I've used this one for over a year now and I love it. My daughter and I both use it weekly and they're easy to take with you if you're traveling great way to pamper your skin after a day outside on the beach.
The price is reasonable for what it is and what it does. I've gotten several compliments on my skin and I'm over 60 so that saying something for the results!
All in all this is a very good product, it doesn't smell and doesn't seem to have any impurities like some others. My skin isn't irritated by it and looks great afterwards. If you're wondering if it washes off once it's soaked in you can wash your face all you want but you're just going to have beautiful glowing cheeks. I wouldn't hesitate to recommend this or give it as a gift!
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Reviewed in the United States on June 11, 2025