What is the difference between full-extension and partial-extension drawers in a vertical file cabinet?

Full-extension drawers slide out completely on ball-bearing slides, allowing access to files at the very back of the drawer. Partial-extension drawers (common in budget models) slide out 75%–80% of depth, leaving rear files difficult to reach without leaning into the drawer. For heavy daily use, full-extension ball-bearing drawers are significantly more ergonomic and last longer. OfficeFurniture2go.com's commercial vertical files include full-extension drawers — call 1-800-460-0858.