Shelf
A storage surface that holds inventory waiting to be picked for an order. A shelf is commonly used to store less than pallet quantities, but an individual rack level is also sometimes referred to as a shelf.
Selective Rack
A storage rack system where standard pallet rack is installed in single or double (back-to-back) rows. It is known as selective rack, because each pallet is accessible (or selectable) unlike some high cube rack systems.
Roller Conveyor
A conveyor where roller tubes with bearings and axles are mounted into a steel frame. Roller conveyors can be either powered or gravity.
Roller Bed Conveyor
A type of power conveyor where the belt is supported by rollers underneath of belt. Usually used where heavy loads need to be conveyed.
Roll Formed Rack
Racks manufactured from coiled steel rolled through incremental bends until desired shape is desired. Roll formed uprights and roll formed beams.
R-Mark
A certification designation awarded to signify a manufacturer’s finished product conforms to the published RMI specifications.
Record Storage
A storage system designed to store company records. Record systems can be designed with shelving or pallet rack depending on the amount of records needing to be stored. Also known as archive storage.
Rack Supported Building
A rack system where the rack is not only used for product storage, but also supports the roof and walls of the facility.
Rack Manufacturer’s Institute (RMI)
An independent trade organization whose members are most of the companies that manufacture industrial storage racks.
Rack
A storage system allowing pallets or other individual products to be stored vertically and increase the cube utilization within a facility. Also known as pallet rack or storage rack.