17404048 1740 4-Panel Hardware Set, 48" 4/0 [1219mm] Track
48" 4/0 [1219mm] Track Length12" 1/0 [305mm] x 4 Nominal Max Width Per Panel1" [25mm] to 1-3/8" [35mm] Panel Thickness15lbs [7kg] Max Weight Per PanelResidential Grade Top Hung, Top Mount Multi-Fold Door HardwareAll Panels Fold in Single Direction1740RD Installation Instructions Manufacturer part number: 17404048