It should be suitable for the use of indoor and outdoor. There must be a serial number and that number must be written down for the security purposes. Bar codes are necessary and offer a greater accuracy for the larger projects. Allow at least 10% clearance for the cable thickness. Use a shortest length to the drop cost. Cable seals are tapered at the one end for locking. The ideal length for securing keeper bars on the truck trailers is medium length cables that are 14 inches.
Use another type of a lock to save and secure the handle latch if you want a higher security to help to prevent theft. For truck trailers and the shipping containers, it is ideal to use long length cables for securing both keeper bars and the handle latch. Most trucks now days though just use cable seals to lock the latch. They don’t bother wrapping bars and why bother as one cut is all this takes to remove no matter how many times it’s enwrapped.