You can use any of the sizes provided ot make the specific diameter model with the given parametric f3m file, but it is not actually necessary as sson as the smallest given model will suite any lid perfectly. To mount on the wall set 2 hooks on the 180° from each other( the hook top facets should be colinear). Secure them with yellow painting tape on the lid. Pin the mounting holes in the tape, then stick the tape on the wall and do the holes in your furniture.
Happy making!
The author marked this model as their own original creation.