Abstract: A parcel box includes at least one sidewall having a first compartment and a second compartment that together form a room; a separator moveably attached to the at least one sidewall between the first compartment and the second compartment for separating the room into a first chamber and a second chamber; and a first door and a second door pivotally attached to the at least one sidewall and corresponding to the first chamber and the second chamber, respectively, wherein the first chamber and the second chamber are configured to receive two articles through the first door and the second door, respectively, and the separator is configured to moveably adjust the volume of the first chamber and the volume of the second chamber based on the weights and/or the sizes of the two articles.