It doesn't fit our 3" binders when you have them binding side up but they do stack inside fine. Ours is a little wobbly but we just put some cardboard under the side so it was even again. Overall functions well for our needs. We really needed a 4 locking drawer cabinet and it was on sale.
I like the high sides that support hanging files. The drawers Fully extend; no more scraped knuckles pulling a file from the back of the draw. Drawers slide easily. Good "all drawers" locking mechanism. Arrived in good condition as scheduled.