Series 40, crossbars at every link 1.KMA mounting brackets 2.Mounting brackets, locking or pivoting form 3.R88: Swivel able and removable lid 4.R88: Removable bottom lids 5.Combinable tube and chain 6.Integratable strain relief 7.40/41: Removable crossbars on both sides Inner widths Bi: 1.97 up to 23.62 (50 - 600 mm) Bending radii R: 5.31 up to 19.68 (135 - 500 mm) Pitch: 3.58 (91 mm) per link = 4 links/ft (11/m) When to use Series 40 If a simple system proven over many years is required When not to use Series 40 If quiet operation is required Series 400 When large unsupported lengths are required in "side-mounted" applications Series 4040 If a simpler and more economical solution is desired Series 140