Flanged Flow Rail Section Description Straight Overall Width 3 In. Overall Length 5 ft. Frame Capacity per Foot on 5-Ft. Centers 37 lb. Frame Capacity per Foot on 10-Ft. Centers 19 lb. Center to Center Roller Spacing 3 In. Wheel Dia 1-5/8 In. Wheel Design Inline Wheels per Foot 4 Skatewheel Material Nylon Frame Style U-Channel Frame Finish Galvanized Frame Material Steel Rail Length 5 ft.