Quote Originally Posted by kjetilhansen View Post
when i have a product that is under 100 grams, but to big for an envelope, how can I set that some products are not suited for letter post, even though they are under 100 gram without using dimmentions?
You can't.

Think about what you are asking.. It is akin to asking "How can I compare the size of one object to the size of another object when neither size is specified"

Cheers
Rod