P1040309 by Vina Lustado | Feb 14, 2013 | 0 comments The 2×4 wood framing is spaced 16” on center (maximum). We used the trailer to make sure the walls are square. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of new posts by email. This site uses Akismet to reduce spam. Learn how your comment data is processed.