Garage Door SBB-2 Sure Stop Bottom Bracket 3" Track Pair

Reduces the risk of a free falling door in the event of a cable breakage or cable disengagement

• For use with 3" track
• Maximum door weight: 2,200 lbs.
• Minimum door weight: 66 lbs.
• Minimum cable tension required: 15 lbs.
• Additional cable length required: 5-1/2"
• Maximum cable diameter: 1/4"
• For use with hi-lift & vertical lift doors
• Sold in Pairs