What’s the difference between PF13L and the PF13CL? Is it that the PF13CL uses another regulator for small propane bottles?

The difference between PF13L and PF13CL is that PF13CL can be configured to use a propane bottle besides a propane tank.  PF13L is only for propane tank.  We use the same regulator for both products.  The value of PF13CL resides in that it is light weight and people can easily take it to camping and other activities that a 20lbs propane tank is too cumbersome to bring along.