Hercules Universal Sink Harness Kit

Install undermount sinks faster and stronger without drilling into expensive countertops.

The Hercules Universal Sink Harness Kit provides a fast, reliable way to install or repair undermount kitchen and vanity sinks. Instead of relying on brackets, wood supports or adhesives alone, the harness transfers the sink’s weight directly to the cabinet. This design helps protect the countertop while creating a secure, long-lasting installation.

The harness works with most stainless steel, cast iron, ceramic and composite undermount sinks. It is suitable for new countertop installations, remodels and sink repairs. Because it can be installed after the countertop is already in place, it also provides a practical solution for replacing failed sink installations.

Whether installing a new sink or repairing a failed installation, the Hercules Universal Sink Harness provides dependable support designed to last for years.

Applications

• Installing undermount kitchen sinks
• Supporting heavy cast iron sinks
• Installing stainless steel and composite sinks
• Installing ceramic vanity sinks
• Installing double-bowl sinks
• Installing bar sinks
• Repairing failed undermount sink installations
• Completing countertop remodels and service work

Features and Benefits

• No brackets, scrap wood or custom blocking required
• No drilling into expensive stone countertops
• No cabinet notching required
• Does not depend on adhesives alone to support the sink
• Works with most stainless steel, cast iron, ceramic and composite undermount sinks
• Compatible with double-bowl, bar and vanity sinks
• Can be installed after the countertop is already in place
• Transfers the sink’s weight directly to the cabinet for superior support
• Reinforces the sink cutout, which is the weakest area of the countertop
• Fast, economical and versatile installation system
• Manufactured from durable 1018 galvanized steel

Specifications

• Product: Hercules Universal Sink Harness Kit
• System Type: Universal undermount sink support harness
• Material: 1018 galvanized steel
• Installation Method: Transfers sink weight directly to the cabinet
• Countertop Modification: No drilling into the countertop required
• Cabinet Modification: No notching required
• Compatible Sink Types: Most undermount stainless steel, cast iron, ceramic, composite, double-bowl, bar and vanity sinks
• Installation Applications: New installations and sink repairs
• Suitable Countertop Materials: Granite, quartz, marble, quartzite, solid surface and other countertop materials

Industry Approval

“The Hercules Sink Harness meets all Caesarstone requirements for mounting of undermount sinks.”

Brian Brutting
Senior Customer Service & Technical Specialist
Caesarstone USA

Countertop professionals are often called to repair failed sink installations that relied on inadequate support methods. The Hercules Universal Sink Harness provides a dependable solution that helps eliminate callbacks while giving installers confidence that the sink will remain properly supported for years.

BB Industries carries professional sink installation systems, countertop fabrication tools, adhesives, supports and accessories trusted by fabricators and installers throughout North America.

BB Industries has you covered!

Frequently Asked Questions

What types of sinks can the Hercules Universal Sink Harness support?
The Hercules Universal Sink Harness is compatible with most undermount stainless steel, cast iron, ceramic, composite, bar, double-bowl and vanity sinks.

Can the sink harness be installed after the countertop is already installed?
Yes. The harness can be installed after the countertop is in place, making it an ideal solution for sink replacements and repair work.

Does the sink harness require drilling into the countertop?
No. The system eliminates the need to drill into expensive stone countertops, helping reduce the risk of damage during installation.

How does the Hercules Sink Harness support the sink?
Instead of relying on adhesives or clips alone, the harness transfers the sink’s weight directly to the cabinet. This reduces stress on the sink cutout and improves the overall strength of the installation.

Why do fabricators choose the Hercules Universal Sink Harness?
Professional installers value its fast installation, universal compatibility, ability to repair failed sink installations and dependable long-term support for undermount sinks.