This filing cabinet is exactly what I needed to keep my busiest files close by. It is built ready for Pendaflex files. You don't have to buy the frame for hanging Pendaflex; it's built in. Actually, this file fits into my office closet. Love the small top drawer and the fact that the file can be locked. It's on lockable wheels which makes it easy to move when I need to do that, and I love the color I've chosen.