Abstract: A method and system for managing inventory of bulk commodities from a remote location. A rack storage unit at the point of use of the parts has multiple levels each having side by side rows for storing boxes of the parts. The rows are inclined downwardly from back to front to effect gravity feeding of the boxes toward the front. Each row has plural sites which may be occupied by a box, and a sensor senses whether a box is present at or absent from each site. Electrical signals from the sensors are processed and transmitted to the parts supplier at a remote location. The supplier receives a display containing information as to which sites are occupied and which are vacant. The supplier can respond by shipping parts that are indicated to be in short supply.