Rack: A system of beams and uprights which form heavy duty shelving for pallets and other product.
Rail: (l-rail) A metal bracket in the shape of an “L” which attaches to an upright and an intermediate post (VPD) to segregate a bay with different size shelves. L-rails attach with two tabs at either end and require no hardware. Decking is placed on the L-rails to make a shelf.
Retainer Brackets: (fence retainer) An accessory which attaches over a beam and provides a stop for long length product that is stored horizontally on the shelf.
RMI: Rack Manufacturers Institute. Membership assumes compliance with manufacturing and design to a strict set of standards. A set of standards is published and may be obtained by contacting the RMI.
Rockwell Readings: A value determined by testing that rates the hardness of metals. A higher rockwell number indicates a higher surface hardness.
Row Spacer: (rigid row spacer) A lateral tie from upright to upright in a back to back rack set up.
Run: A row of rack. Multiple bays in a line.