Standard File Drawers
The most common and versatile system for hanging file folders is to cut a slot for the rails and hang them from the sides or fronts and backs of the drawer as shown below. For Standard configurations (rails run front to back), the dimension we use is 12 1/4" to the outside of the rails for Letter files and 15 1/4" for Legal files. (refer to drawing below)
Standard Letter and Legal shown above. (Min width for Letter: 14", Legal: 17")
Lateral, Letter and Legal shown above with 'L' bar for stability. (bars towards front) min depth for letter: 14 5/16 for 5/8" thick, min depth for legal 17 1/4 for 5/8" thick.