Many vintage trailers from the 1960s use canvas cot bunk beds that look something like an old army stretcher. They're really easy to make and to use but you need to have strong cast brackets to hold safely.
We've reproduced the originals with a few minor improvements like larger mounting holes to accept #10 screws and a more consistent wall thickness to eliminate weak points.
Two brackets included. You need four for a single bunk, so order 2 packages.