A tube holder assembly includes a base plate, an attachment plate, and an optional securing element. The base plate may include guides into which protrusions of the attachment plate slide to alter the positioning apparatus from an open position to a closed position. The base plate also includes receivers to receive tubular members, which have their movement restrained by the receivers and the securing elements in the closed position. The tube holder assembly may also include a latch to help maintain the closed position during operation.

A modular container storage system includes multiple container units configured to be assembled to one another in an indefinite expanded state for enabling sheltered access to the stored items through a corridor enclosure, and in a compacted state for convenient transport and/or reduced storage space.

A modular container storage system includes multiple container units configured to be assembled to one another in an indefinite expanded state for enabling sheltered access to the stored items through a corridor enclosure, and in a compacted state for convenient transport and/or reduced storage space.

In general, one aspect of the subject matter described in this specification is embodied in a rack system. The rack system includes a first stackable rack and a second stackable rack. The first stackable rack includes a top ceiling, a bottom surface, a first sidewall and a second sidewall. The second stackable rack includes a top ceiling, a bottom surface, a first sidewall, a second sidewall and a shelf. The top ceiling, the bottom surface, the first sidewall, the second sidewall and the shelf of the second stackable rack define a first compartment and a second compartment. The bottom surface of the first stackable rack is slidably coupled with the top ceiling of the second stackable rack.

Various embodiments of a storage device are provided. The storage device includes one or more storage compartment that are slidable with respect to sidewalls of the storage device. The containers are also rotatable with respect to the sidewalls of the storage device, thereby permitting improved accessibility to the storage compartment in the container.

A cargo handling assembly for a transport container includes an adapter tray configured to fit within a gap between floor panels of the transport container, the adapter tray comprising a lower wall and side walls forming a recessed gutter. An anchor plate is attachable to the lower wall of the adapter tray. A roller tray is configured to nest within the recessed gutter of the adapter tray, the roller tray comprising an anchor block for attachment to the anchor plate. A tray cover is insertable into the recessed gutter when the roller tray is removed, the tray cover configured to span between the side walls of the adapter tray.

In general, one aspect of the subject matter described in this specification is embodied in a rack system. The rack system includes a first stackable rack and a second stackable rack. The first stackable rack includes a top ceiling, a bottom surface, a first sidewall and a second sidewall. The second stackable rack includes a top ceiling, a bottom surface, a first sidewall, a second sidewall and a shelf. The top ceiling, the bottom surface, the first sidewall, the second sidewall and the shelf of the second stackable rack define a first compartment and a second compartment. The bottom surface of the first stackable rack is slidably coupled with the top ceiling of the second stackable rack.

Various embodiments of a storage device are provided. The storage device includes one or more storage compartment that are slidable with respect to sidewalls of the storage device. The containers are also rotatable with respect to the sidewalls of the storage device, thereby permitting improved accessibility to the storage compartment in the container.