Hidden Granite Countertop Flat Bracket

Discover the ultimate solution for perfectly supported, floating countertops. The Iron Supports Hidden Granite Countertop Flat Bracket is expertly engineered for seamless integration into pony walls and raised bar areas, providing robust support that remains completely out of sight. Achieve a sleek, modern aesthetic for your kitchen. or custom space, knowing your countertop is securely anchored by American-made quality.

Built for Strength, Designed for Discretion. Our brackets are forged from heavy-duty 1/2" thick solid A-36 HRPO steel, a material chosen for its exceptional durability and structural integrity. Each bracket is rated to support an impressive 325 pounds, ensuring unwavering stability for even the heaviest granite, quartz, concrete, or natural stone surfaces. The ultra-narrow profile (2.5" wide x 0.5" thick) allows for a truly invisible installation, making your countertop appear to float effortlessly.

Specifications at a Glance:

• Material: A-36 HRPO Steel
• Thickness: 1/2"
• Width: 2.5"
• Lengths: 8", 10", 12", 14", 16", 18"
• Mounting: 4 pre-drilled holes, compatible with #14 x 2.5" Phillips Flat Head Screws (included). Designed for 2x4 or 2x6 framing.
• Beveled End: Smooth beveled end for enhanced safety.
• Load Capacity: 325lbs ea. Important Note on Load Capacity: The stated carrying capacity of 325 lbs per bracket is achieved only when the bracket is properly mounted to a solid, structurally sound substrate using the included hardware. Ensure fasteners are secured firmly without over-torquing, which could compromise the integrity of the substrate or the fastener itself.

Key Product Advantages:

• Invisible Support: Engineered for discreet installation within knee/pony walls, maintaining a clean, contemporary design.
• Exceptional Load Capacity: Each bracket supports up to 325 lbs, providing industry-leading strength for diverse materials.
• Premium American Steel: Crafted from robust A-36 HRPO steel for maximum longevity and peace of mind.
• Durable Finish Options: Available in professional-grade black or white powder-coated finishes for superior corrosion resistance (indoor/outdoor suitability), or raw steel for custom applications.
• Fast & Reliable Delivery: In-stock, same-day shipping ensures your project stays on schedule.
• Direct from Manufacturer Value: Benefit from unmatched quality and competitive pricing when you buy direct from Iron Supports.

Ideal Applications & Uses:

• Countertop overhangs on Knee Walls & Pony Walls.
• Raised Bar Support. 
  
• Raised Breakfast Bar Support.
• Kitchen island extensions and breakfast bars.
• Supports for granite, quartz, natural stone, concrete, wood, Formica, and all other countertop materials.
• Perfect for creating a clean, floating, minimalist aesthetic.

Tech & Install Document Files:

• [Download Detailed Installation Guide (PDF)]
• [Download Tear Sheet (PDF)]
• [Download Size & Quantity Guide (PDF)]
• [Download Spec Drawings (PDF)]
• [Download FEA Report (PDF)]
• For Designers/Architects: Access .CAD, .STEP, .DWG files and more for your drafting software by sighing up on our Contractor Plus page here. 
  
• Questions? Contact our expert team at hello@ironsupports.com or (888) 971-3771. We're here to help you get the perfect solution for your project.

Size & Quantity Guide

--Our recommendations meet or exceed the general guidelines provided by the Natural Stone Institute (formerly MIA) for safe and effective countertop support. While natural stone and exotic materials can be unpredictable, and man-made solid surface tops may require less support, our recommendations, based on extensive experience, offer a higher level of structural integrity and peace of mind compared to the minimum guidelines for unsupported overhangs.--

1. What Size Bracket Do I Need? (Based on Your Countertop Overhang)

To ensure invisible, strong support, your bracket should extend to within 3-4 inches of your countertops outer edge. Here's how to figure it out:

• Measure Your Overhang: Determine the depth of your countertop overhang from the front of your knee or pony wall. (e.g., 15 inches).
• Measure Your Wall Framing: Find the depth of your knee or pony wall framing (typically 4" to 6" for standard lumber).
• Calculate Total Required Depth: (Countertop Overhang Depth) + (Wall Framing Depth)
• Select Your Bracket Size: Subtract 4" from your Total Required Depth. Choose the closest bracket length from our available sizes that meets or exceeds this number.
• (15" Overhang + 4" Wall) = 19" Total Depth.
• 19" - 3" (unsupported overhang) = 16".
• Recommended Bracket Size: 16" Hidden Flat Bracket.
• Example: For a 15" countertop overhang on a 4" deep pony wall:
• (15" Overhang + 4" Wall) = 19" Total Required Depth.
• 19" - 3" (unsupported overhang) = 16".
• Recommended Bracket Size: 16" Hidden Flat Bracket.
• Available Sizes: 8", 10", 12", 14", 16", 18"

Recommended Bracket Size Table

2. How Many Brackets Do I Need? (Based on Your Countertop Width)

For optimal stability and weight distribution, these brackets are typically spaced16 to 24 inches apart. We recommend placing 2 brackets near the ends and then spacing additional brackets evenly across the remaining span.

• Step A: Place End Brackets: Install one bracket 4"-6" in from each end of your countertop. (This accounts for 8"-12" of total width).
• Step B: Measure Remaining Width: Subtract the width covered by the end brackets from your total countertop width.
• Step C: Calculate Additional Brackets: Divide the "Remaining Width" by your desired spacing (e.g., 16" for standard support, 24" for lighter duty or tighter spacing). Always round up!
• Step D: Total Brackets: Add the 2 end brackets to your calculated "Additional Brackets."
  • (84" Total Width - 8" for end brackets) = 76" Remaining Width to support.
  • 76" / 16" (desired spacing) = 4.75. Round up to 5.
  • Total Brackets Needed: 2 (ends) + 5 (additional) = 7 Hidden Flat Brackets.
• Example: For an 84" wide countertop with end brackets set 4" in from each side:
• Note: For an 84" countertop, you'd typically order 7 brackets for maximum support.

Recommended Bracket Quantity Table (Includes the 2 End Brackets 4" From Each End)

Installation Video