Symbol Parcel Box Metal Sign

About the Parcel Box design

Six rounded corners turn the outline into a cube seen from above, with one upright dropping from the center of the hexagon to the bottom point to divide the two front faces. Across the lid a wide band of steel runs corner to corner, angled to match one edge of the top face and leaving two unequal parallelograms on either side of it. That band is the widest stretch of steel in the drawing, broader than the border carrying it.