1740 4-Panel Hardware Set, 72" (1829mm) 6/0 Track
18" [457mm] 1/6 x 4 Max Width Per Panel72" [1829mm] 6/0 Track Length1" [25mm] to 1-3/4" [44mm] Panel Thickness50lbs [23kg] Max Weight Per PanelTop Mount Hardware AttachmentCommercial Grade Top Hung, Top Mount Bi-Fold Door Hardware1700RD Installation Instructions Manufacturer part number: 17404072