Can I convert a letter-size filing cabinet to hang legal-size folders?

Typically no — the interior width of a letter-size cabinet is designed for letter-width folders and rails, and legal folders (which are 15 inches wide vs. 12 inches for letter) won't fit without modification. Some manufacturers offer conversion kits that replace letter-width hanging rails with adjustable wider rails, but even then, the drawer depth may not accommodate legal folders properly. If you need legal-size storage, the right solution is purchasing a legal-size cabinet — they're the same height and depth as letter-size, just about 3 inches wider. Mixing sizes causes filing errors and frustration. For legal-size vertical cabinets, FindOfficeFurniture.com has a good selection — call 888-719-4960.