Corrugated type Separator Tray is designed to pack fragile contents and offers additional strength and support to the shipping container. The Separator Tray is formed as a single die-cut flat blank which is cut and scored or creased for being set up and inserted into the box to provide several separate compartments. The Separator Tray provides compartments having useful irregular cross-sectional shapes. Corrugated type Separator Tray is particularly suited for the packaging of irregularly shaped articles with a maximum box packing density.