Series 1640, crossbars at every link 1. Numerous interior separation possibilities 2. Wide, rounded plastic crossbars - cable friendly 3. Lateral glide surfaces for side-mounted operation 4. Closed and open styles can be combined 5. Hinged snap-open removable lids along outer radius of Energy Tube 6. Removable lids along inner radius 7. Dirt repellant exterior 8. Energy Chain® also avai l able with re verse bending radii Inner widths Bi: 1.97 up to 23.62 (50 - 600 mm) Bending radii R: 7.87 up to 23.62 (200 - 600 mm) Pitch: 5.63 (143 mm) per link = 3 links/ft (7/m) When to use Series 1640 If a simpler, low-cost solution is required If optimized interior space is required If the Series 400 is too large When not to use Series 1640 If maximum stability is required Series 600 Series R608