Tambour cupboards are a recent innovation in office furniture. They are an excellent means of storing files, as well as general office storage such as stationary, brochures, supplies etc. The key feature of a tambour cupboard is that the doors are made from slats and they roll into the top or the side of the cupboard.
Originally they rolled up into the top of the cupboard, but this has recently been superseded by side-rolling doors. The old vertical mechanisms were prone to failure, they took up a lot of space and, because of the height of the cupboard, could be difficult for people of below average height to manipulate. The newer side opening doors take up much less space and are much easier to use.