Countertop Support Brackets Heavy Duty 6″-18″, 300lb

39 reviews


Delivery: Sep 29, 2023 - Oct 4, 2023
SKU: va-tool-Lbracket Categories: , ,
Countertop Support Brackets Heavy Duty,  5 mm Thick Iron Industrial Shelf Brackets, Farmhouse Wall Mounted Floating L Support for Hanging DIY Open Shelving. 6″-18″ length. Max Load 300 lb.


vadania hardware tools


This support bracket can be used with boards ranging from 6 inches to 20 inches, making it perfect for a variety of different projects.

  • Compatible with boards measuring 6 in – 20 in (152 mm – 508 mm)
  • Versatile design for different projects
Home Decor

Our frosted black wall brackets create a rustic look in any room and serve as an attractive addition to your home decor.

  • Frosted black look creates rustic style
  • L-shaped design for added support
DIY Shelving

These black countertop brackets are perfect for adding farmhouse style to your home. You can use them to display plants, photos, books, kitchen goods, and other decorations.

  • Great for DIY shelving projects
  • Display various items with ease
Heavy Duty

Made of top-grade iron (black & white) or stainless steel, these rustic shelf brackets are incredibly sturdy and durable.

  • Made of top-grade iron (black & white) or stainless steel
  • 5 mm thickness can hold up to 300 lb (136 kg) without bending
  • For 8 inch shelf brackets, it’s better use wood board from 8 inches to 10 inches.
  • For 10 inch shelf brackets, it’s better use wood board from 10 inches to 12 inches.
  • For 12 inch shelf brackets, it’s better use wood board from 12 inches to 14 inches.
  • For 14 inch shelf brackets, it’s better use wood board from 14 inches to 16 inches.
  • For 16 inch shelf brackets, it’s better use wood board from 16 inches to 18 inches.
  • For 18 inch shelf brackets, it’s better use wood board from 18 inches to 20 inches.
  • 1 x pair of shelf brackets
  • 8 x bolts and screws
Please Note: Not all 100% perfect 90 degree angles, there may be a deviation of 1-2° in the production process. Can be easily adjusted to level with a simple screw mount.



VADANIA is a global hardware trading company. We have a mature production line and R&D technology. The company mainly focuses on residential drawer slides, industrial drawer slides, kitchen & household hardware and fittings, woodworking tools and vanlife accessory. VADANIA mainly targets Europe, America, Japan, Russia and other consumer markets. The brand was founded in 2015, and since then it has upheld the philosophy that “Safer and stronger hardware for better life”. Its business covers all over the world. Detail check brand story

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39 reviews for Countertop Support Brackets Heavy Duty 6″-18″, 300lb

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  1. Angelic

    A little disappointed that the wall anchors that came with this we’re very flimsy and the hardware itself was silver tone, not black coated like the shelf. The black paint had also been chipped off of the shelf in a few spots. Both were an easy fix with getting better well anchors and some black paint, but would have preferred it to not have to spend the additional money on it.

  2. Pearl

    As seen in the pic, the welds are visually quite apparent. These are really solid, seem like they could hold up a car.

  3. Imogene

    Awesome product. I put brackets on studs with two screws on each side (up and down) in stud center with the other holes using sheetrock type screws. Placed a 100 lb hewed beam on brackets and all good!!

  4. Primavera

    Very heavy construction. Just what I needed.

  5. Olin

    used for brace

  6. Ivory

    These are super heavy duty and look good. Overall I¡®m pleased, but do have a few gripes…1) One of my two brackets was bowed in the middle, and neither was a 90 degree angle. 2) They came with some major and, no doubt, pricey sleeved bolts that have no instructions and I have no idea how to use, but are not applicable for walls (nuts in the back). If I did use them, they are brass colored instead of black. 3) Small shelf screws were included, but I had to come up with my own wall screws. Would be helpful to have matching ones included. Better yet, ask people when ordering what it¡®s being installed on and include appropriate hardware rather than sending everyone mysterious bolts. 4) Can only screw 2 of 4 mounting holes in a stud because of spacing, which means I not only had to find screws that were the right head size, shape, length and color but also had to find mollies to fit them so I could use matching screws on all holes.

  7. Holy

    Comes with strong anchor bolts for concrete, but I doubt that many applications would require these. I’m mounting to metal studs to support 16″ overhang of countertop, so needed lag screws. Horizontal hole spacing is 1-1/4″ so I needed to add wood backup block which I screwed and glued to the side of the metal stud. Fortunatley, I had access to the back of the wall.

  8. Sharon

    I needed some heavy duty brackets that didn’t break the bank for a furniture project, these are the ones.Load:I tested one of the brackets with my body weight and after doing so I have full confidence that a pair of these can support the claimed 360lbs. This is in stark opposition to a lot of “similar” products listed which don’t seem to have done even the most basic 3d stress testing. The biggest factor that makes brackets stable or not is the gusset and you won’t find ones this heavy duty and cheap unless you’re making it yourself or buying direct from manufacturer. If you see any brackets claiming they can hold 300 lbs without a gusset they are probably lying, even if it’s 1/4″ steel.Squareness:This would be the only annoying part of this product. A lot of reviews on here claim these aren’t square. Well that is and isn’t true. The defect rate seems to be something ~50%. For most heavy duty projects (like hanging a garage shelf) it isn’t off enough to make a big difference, but I needed these to be exactly 90deg. If you need a perfect square order double the amount +1 and just return the ones that aren’t square.Finish:Was looking for aluminum, but for a steel bracket it has a nice paint job. Should be great for indoor purposes, maybe okay outdoors but I would bet it would eventually rust out depending on where you are. There are other sealers you can use to coat if using outside.

  9. Quintana

    Fit my need perfectly.

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