---
product_id: 452613415
title: "(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included"
brand: "petrelwing"
price: "NZ$141"
currency: NZD
in_stock: true
reviews_count: 8
category: "Petrel Wing"
url: https://www.desertcart.nz/products/452613415-3-pack-countertop-support-bracket-top-mount-solid-heavy-duty
store_origin: NZ
region: New Zealand
---

# 12-inch heavy-duty steel bracket rustproof black powder coating 200 lbs load capacity (3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included

**Brand:** petrelwing
**Price:** NZ$141
**Availability:** ✅ In Stock

## Summary

> 🖤 Hidden power, visible style — support your space like a pro!

## Quick Answers

- **What is this?** (3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included by petrelwing
- **How much does it cost?** NZ$141 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/452613415-3-pack-countertop-support-bracket-top-mount-solid-heavy-duty)

## Best For

- petrelwing enthusiasts

## Why This Product

- Trusted petrelwing brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Invisible Strength:** Top-mount design keeps brackets hidden for a sleek, modern look without sacrificing support.
- • **Space-Smart Design:** No corbels means more legroom and zero knee bumps—perfect for stylish, comfortable countertops.
- • **Effortless Installation:** Includes 6 premium wood screws and countersunk holes for a quick, secure DIY setup.
- • **Sleek & Rustproof Finish:** Matte black powder coating resists corrosion while adding a contemporary edge to your space.
- • **Industrial-Grade Durability:** Crafted from 1/4 inch thick alloy steel to hold up to 200 lbs per bracket—built to last and protect your investment.

## Overview

This 3-pack of 12-inch PetrelWing countertop support brackets offers heavy-duty, concealed support for granite, quartz, marble, and more. Made from thick alloy steel with a rustproof black powder finish, each bracket supports up to 200 lbs. Designed for top-mount installation, they maximize legroom and maintain a clean, modern aesthetic. Easy to install with included screws, these brackets are trusted by contractors and perfect for elevating your DIY or professional projects.

## Description

Product description Why choose Petrelwing countertop bracket ? Non-intrusive design,Virtually Invisible , which means you or your customer will have a modern Kitchen countertop , and no more knee knocking when sitting at your countertop! High Quality Industrial Material , Which means your or your customer’s countertop will be durable, no cracking or tipping . Rust Resistant , Which means your or your customer's countertop will be lasting long time and always Just like the new one . Contractor trusted quality, Which means your or your customer's can trust our the quality , since a lot of contractor have been tested the quality for many years . 1. Notch cabinet Walls or Knee Walls for Counter Bracket , the notch should be 2-1/2” Wide and 1/4” deep. Space the brackets 18-24” apart, starting 3-6” from outer edges , Ensure brackets sit flush with notch . 2. Insert brackets and fasten Determine if included screws are appropriate for your project , Fasten brackets to notch using 4-6 screws per bracket . 3. Check for level , filling piece if need Check that the brackets are level and glue filling piece onto the bracket if it is necessary 4. Apply adhesive Use an appropriate epoxy or construction adhesive to mount the countertop 5. Install countertop Place the countertop onto the bracket and flush with cabinet or knee wall

Review: Still Holding Up My Counter - This was installed over a year ago in my hanging granite countertop. It's still holding up fine. It wad easy for my husband to install and works well. We had to have the countertops reinstalled immediately after installation because the company installed scratched granite. We were able to reuse these, thankfully.
Review: Great for supporting floating mantle shelf - Exactly what I needed for supporting my floating fireplace mantle shelf. Although the documentation doesn't say, I contacted the company through the desertcart support tool. They they got back to me very promptly to let me know each bracket can support 200 pounds.

## Features

- STRONG VALUE INDUSTRIAL DESIGN: PetrelWing countertop support top mount bracket is ideal for concealed countertop , Safely provide strong and nonintrusive support for any types of the countertop , include granite, quartz, marble, manufactured stone & more .
- NON-INTRUSIVE AND MODERN DESIGN: Once installed this support bracket will be invisible, non-intrusive design provide more open space for chairs and legs ,Support countertop without corbels ,which means no more knee knocking when sitting at your countertop!
- HIGH QUALITY INDUSTRIAL MATERIAL: This heavy duty floating shelf brackets made of one piece 2-1/2 Inch wide and 1/4 Inch thick high strength steel , provide high bearing capacity and high stiffness ,making sure your or your customer’s countertop investment is protected against cracking or tipping.
- EXCELLENT MADE: Countersunk holes and back-leveled edge for safety and modern style, rustproof black powder coating finish, the quality have been tested by a lot of contractors in US .
- Easy to install: Very easy to install , 6 pieces 2 inch wood screws included .

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B1X5LW6X |
| Best Sellers Rank | #272,518 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #1,271 in Shelf Brackets |
| Brand | PetrelWing |
| Brand Name | PetrelWing |
| Color | Black |
| Customer Reviews | 4.7 out of 5 stars 169 Reviews |
| Finish Type | Coated |
| Finish Types | Coated |
| Included Components | screw |
| Item Depth | 2.5 inches |
| Item Dimensions | 12 x 2.5 x 0.25 inches |
| Item Type Name | Heavy Duty Knee |
| Item dimensions L x W x H | 12 x 2.5 x 0.25 inches |
| Manufacturer | PetrelWing |
| Manufacturer Part Number | SKU10063A |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Model Number | SKU10063A |
| Mounting Type | Embedded |
| Unit Count | 3.0 Count |

## Product Details

- **Brand:** PetrelWing
- **Color:** Black
- **Finish Type:** Coated
- **Item dimensions L x W x H:** 12 x 2.5 x 0.25 inches
- **Material:** Alloy Steel

## Images

![(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included - Image 1](https://m.media-amazon.com/images/I/51mjBq8NwVL.jpg)
![(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included - Image 2](https://m.media-amazon.com/images/I/71bliXJZrPL.jpg)
![(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included - Image 3](https://m.media-amazon.com/images/I/71eQS3kwHAL.jpg)
![(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included - Image 4](https://m.media-amazon.com/images/I/61CAhJA5jsL.jpg)
![(3-Pack) Countertop Support Bracket,Top Mount,Solid Heavy Duty Knee Wall Hidden Granite Countertop Support Floating Shelf Bracket,Shelf Bracket Hardware,Set of 3,12 Inch,DIY Projects,Screws Included - Image 5](https://m.media-amazon.com/images/I/61I+xIzFLPL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Still Holding Up My Counter
*by J***. on January 30, 2025*

This was installed over a year ago in my hanging granite countertop. It's still holding up fine. It wad easy for my husband to install and works well. We had to have the countertops reinstalled immediately after installation because the company installed scratched granite. We were able to reuse these, thankfully.

### ⭐⭐⭐⭐⭐ Great for supporting floating mantle shelf
*by G***Z on November 22, 2025*

Exactly what I needed for supporting my floating fireplace mantle shelf. Although the documentation doesn't say, I contacted the company through the Amazon support tool. They they got back to me very promptly to let me know each bracket can support 200 pounds.

### ⭐⭐⭐⭐⭐ Granite Support
*by 8***Z on October 28, 2023*

We buy these frequently when installing new kitchens with heavy granite or quartz countertops. They support your countertop without being seen. Their slim design is tucked under the countertop, so if you are sitting at the counter, you don't knock your knees on a giant bracket. Great product that we buy often!

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*Product available on Desertcart New Zealand*
*Store origin: NZ*
*Last updated: 2026-05-27*