We have H channel you could use with the part # 36281-955 which is 93-1/2 inches long but we don't have a way to cut it here. You'd have to cut it down to the size that you need. view full answer...
I am happy to help point you in the right direction, but I cannot recommend a step based off of just a year make and model. If only it were so easy, right? Looking at pictures of these 2013 K-Z toy haulers it appears to have a step similar to the Kwikee brand electric RV steps. For example it looks like something like part # LC3722615 which is a very common Kwikee step.
If you can provide a model number off of the current step, we can usually reference that easily enough to find specs.... view full answer...