For Bi-Passing doors up to 100 lbs. System has four free-rolling nylon wheels mounted on pivoting rocker-arms which allow constant wheel contact with track. Each door therefore, rides on eight wheels. Skipping or jumping is impossible. The ball-and-socket suspension compensates for minor header misalignment. Hangers are secured by vibration proof stop nuts.Mounting: TopAdjustment: 3/4" verticalDoor Thickness: 3/4"Headroom: 2-1/8" min - 2-7/8" max
System 72222 Additional InformationProduct Specifications