Abstract: A safety device for preventing objects from falling out of a storage rack is provided. The safety device includes four mounting brackets configured to be coupled to a pair of vertical members defining the storage rack, a pair of horizontally disposed top and bottom guide cables for stretching between a corresponding pair of mounting brackets of the four mounting brackets coupled to the pair of vertical members, and a pair of vertical slide bars for slidably mounting to the top and bottom guide cables at opposite left and right sides at a front of one bay in the storage rack. A curtain netting is attached at left and right edges thereof to respective ones of the pair of the vertical slide bars and to the top and bottom guide cables. Storage racks and methods of protecting objects stored on storage racks are also described.