I ordered replacement locks for all of my storage compartments, because every trailer on earth uses the same CH751 key, so everyone with a trailer has access to your storage compartments, and they could even climb through into my trailer if they wanted to. I matched the key to the main door of my trailer at rvlocksandmore.com. They were $6.49 each. I haven't replaced them yet, but every lock comes with a key, so now I'll have the original 2, plus 6 more spares. More than I'll probably ever need. You can also just buy pre-cut keys there to match your current keys for $3 each. I might even replace the rear bathroom door lockset with the same one as the front so I only have one key to worry about.
2016 Coachmen Freedom Express 282BHDS
2008 Dodge Ram 1500 Quad Cab 4x4 Big Horn, 5.7L HEMI