Heavy-duty commercial safety brackets designed to help prevent an overhead door from free-falling if a lift cable breaks or disengages.
The SBB-2 Sure Stop Bottom Bracket System is designed for heavy commercial and industrial sectional garage doors using 3-inch track. If a lifting cable loses tension, breaks, or disengages, the bracket activates to help stop the door from falling uncontrollably.
Built for demanding overhead door applications, the SBB-2 combines the functions of a bottom fixture and cable-break safety device. It is suitable for standard-lift, high-lift, and vertical-lift door systems when properly selected and installed.
Cable-Break Protection Helps stop the door if a lift cable breaks, disengages, or loses the required tension.
Heavy-Duty Capacity Designed for compatible commercial doors weighing from 66 to 2,200 lbs.
Multiple Lift Types Suitable for standard-lift, high-lift, and vertical-lift sectional doors.
Key Features
- Commercial cable-break safety bottom bracket system
- Designed for compatible 3-inch garage door track
- Helps prevent uncontrolled door movement after cable failure
- Supports sectional doors weighing between 66 and 2,200 lbs.
- Accepts lifting cables up to 1/4 inch in diameter
- Requires at least 15 lbs. of cable tension for proper operation
- Compatible with standard-, high-, and vertical-lift systems
- Sold as a complete left-hand and right-hand pair
Product Specifications
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Model: SBB-2 Sure Stop
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Track Size: 3-inch track
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Door Weight Range: 66–2,200 lbs.
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Maximum Cable Diameter: 1/4 inch
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Minimum Cable Tension: 15 lbs.
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Lift Compatibility: Standard, high lift, and vertical lift
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Quantity: One left-hand and one right-hand bracket
Compatibility Notice: Verify the door weight, track size, lift type, cable diameter, cable routing, roller position, and mounting requirements before ordering. Proper cable tension is required for the safety mechanism to function correctly.
Professional Installation Required: These brackets connect directly to garage door lifting cables and spring-loaded hardware under extreme tension. Installation, testing, and adjustment should be completed by a qualified commercial garage door technician.
