Johnson Hardware 138F Sliding Bypass Door Hardware (60" 2 Door System) FOR STANDARD DOORS  For 1 3/8 thick doors with 125-pound capacity max panel weight. PATENTED DESIGN - Patented "tricycle" hangers with 1" [25mm] dia. wheels ride smoothly and quietly. SOLID MATERIALS - Precision extruded commercial grade aluminum track. ADJUSTABLE - Hangers are adjustable for height in case of settling. MADE IN USA - Manufactured in the United States.