RAY-FLEX Flexible aluminium conduit. A raceway of circular cross-section made of helically wound, interlocked aluminium strip. Suitable for use in accordance with CEC rule 12-1000 rigid and flexible metal conduit. Suitable for installation in or on buildings or portions of buildings of either combustible or non-combustible construction. Suitable for wiring under raised floors for data processing and similar systems. Suitable for use in class I zone 2 where flexibility. 76.2 inch inner diameter, 85.34 to 90.42 inch outer diameter. Bend radius 30 inch.