Description
Concealed Countertop Support
CarbonBar™ Hidden Island Support
Stronger than steel. Lighter than aluminum. Completely invisible.
The CarbonBar™ Hidden Island Support Bracket is the professional’s choice for discreet, high-strength countertop cantilever support. Designed specifically for flush-mounting inside standard 24″ cabinetry, these brackets extend outward under heavy island overhangs to provide extreme load-bearing strength without the knee-knocking bulk of traditional steel corbels.
Every bracket is packaged with (2) CarbonConnect Direct fittings, delivering a fast, repeatable installation system for fabricators. Whether you’re supporting natural granite, engineered quartz, Dekton, or butcher block, CarbonBar provides an uncompromising, rust-proof foundation for modern floating designs.
Watch CarbonBar™ extreme structural flex and load testing.
Why CarbonBar Beats Steel
- 4X Stronger Than Steel: High rigidity with virtually zero deflection—perfect for heavy stone or compact surfaces.
- 5X Lighter Than Steel: Effortless to transport and maneuver on the job site without straining installers.
- 100% Corrosion Proof: Carbon fiber will never rust, scale, or warp, making it the ultimate solution for outdoor kitchens and coastal environments.
- Cleaner Aesthetic: At only 0.2″ or 0.4″ thick, the bracket remains completely hidden beneath the countertop, maximizing legroom.
Built For Fabricator Speed
- Flush, Invisible Install: Routs easily into cabinet pockets to sit perfectly flush with the framing box.
- Optimized for 24″ Cabinetry: Each bracket length is specifically engineered to anchor securely across a standard 24″ deep cabinet base.
- Included Hardware: Stop buying separate anchors. Each bracket comes pre-packaged with two CarbonConnect Direct clips.
- All Material Compatibility: Works flawlessly to reinforce quartz, sintered stone, concrete, and butcher block surfaces.
Thickness Selection & Adhesive Requirements
CarbonBar Hidden Island Supports are available in two strict dimensional profiles to match your routing depth capabilities. Choosing the correct adhesive for your chosen thickness profile is critical to achieving maximum structural load ratings.
- 0.4″ Standard Rigidity: The baseline choice for maximum independent overhang support. Install using standard silicone or construction adhesive.
- 0.2″ Ultra-Thin Rigidity: Engineered for minimal routing depth.
CRITICAL ADHESIVE WARNING: To guarantee structural integrity, 0.2″ profiles MUST be laminated or bonded to the stone using high-performance structural adhesives like CarbonBond™ Epoxy or CarbonBond 1C Hybrid Adhesive. Silicone is not sufficient for 0.2″ profiles.
Visual profile cross-section of 0.2″ Ultra-Thin vs 0.4″ Standard flat stock geometry.
Hardware Included: CarbonConnect™ Direct
Unlike raw flat stock, every Hidden Island Support Bracket arrives completely ready to install. Two (2) CarbonConnect Direct mounting fittings are included with every bracket. Simply rout or chisel a pocket in the cabinet frame, anchor the CarbonConnect Direct fittings securely into the wood, and drop the CarbonBar into the channels. This system guarantees a locked-in, perfectly flush mount without the need for custom job site fabrication.
(2) Included CarbonConnect Direct mounting clips per bracket.
CarbonBar Length & Overhang Guide
Each bracket is designed to span a standard 24″ cabinet base and cantilever outward. Depending on the stone material and installation method, these structural brackets are engineered to support up to 6 inches of stone past their own physical length.
| Bracket Length | Bracket Extension Past Cabinet | Stone Cantilever Allowance | Max Recommended Overhang |
|---|---|---|---|
| 29″ Bracket | 5″ | +6″ past bracket end | Up to 11″ Total Overhang |
| 32″ Bracket | 8″ | +6″ past bracket end | Up to 14″ Total Overhang |
| 34″ Bracket | 10″ | +6″ past bracket end | Up to 16″ Total Overhang |
| 38″ Bracket | 14″ | +6″ past bracket end | Up to 20″ Total Overhang |
| 44″ Bracket | 20″ | +6″ past bracket end | Up to 26″ Total Overhang |
⚠️ Engineering Disclaimer: Actual safe overhang capacity varies strictly by stone material type, substrate thickness, and installation execution. Always consult a structural expert for long spans or unusually heavy point loads.
Technical Specifications
| Product Architectural Property | Industrial Standard Value Profile |
|---|---|
| Material Baseline | High-strength aerospace-grade carbon fiber composite polymer matrix profile |
| Available Dimensions | 2.00″ Width | 29″, 32″, 34″, 38″, 44″ Lengths | 0.2″ and 0.4″ Thickness profiles |
| Included Mounting Hardware | Two (2) CarbonConnect Direct mounting clips included with every bracket |
| Required Surface Adhesive | 0.2″ Ultra-Thin: CarbonBond™ Epoxy / CarbonBond 1C 0.4″ Standard: Standard Silicone or Construction Adhesive |
| Environmental Rating | Indoor/Outdoor Rated. Completely rust-proof, corrosion-resistant, and thermally stable. |
| Origin & Certifications | Proudly Extruded in the USA; fully RoHS environmental standard compliant |
Bidding for a High-Volume Commercial Millwork Sub-Contract?
Do you require bundled batch wholesale pricing, contractor packs, verified structural testing report sheets, or custom project dimensions pre-cut straight from production lines? Contact our multi-family project coordinators for fast engineering submittal packages.
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