You would think they could drop one in an envelope with a 1st class stamp (46¢); and even though, for one or two labels, just do it for free. If you need one, you're a customer, after all.
I have a bunch, I'll try to dig them out in the next day or so.
Here's the panel I did for my Catalina 36, 16 years ago! Note, at the time, there was no good solution for an ON/OFF/AUTO bilge pump switch. I had to make labels, and the pumps are fused via a BSS fuse panel mounted behind, fed by the "DC SUB PANEL" breaker.