This 4 Drawer filing cabinet is great value for the quality with all the melamine being 25mm thick creating an extremely strong and durable construction. The drawer runners are metal and telescopic the same used on metal filing cabinets and they enable the drawer to come fully out safely and are a lot more durable then most runners used in the market place. The key lock does lock all the drawers at once unlike some models that just lock the one drawer. They come fully assembled so they can have a 5 year manufacturers warranty and are built to last. Suitable for both commercial offices and the home office alike. This Swan range of filing cabinets and desking are available in a modern co-ordinate charcoal and beech melamine finish. It has clean lines and a full range of co-ordinate items including filing cabinets hutches returns and storage cabinets. They are a great way to create a co-ordinated easy to clean modern working environment.